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DENVER — A Denver police officer is under an internal investigation after a photo of him and two other officers dressed in riot gear was posted on Instagram with a caption that read, “Let’s start a riot.”A screenshot of the officer’s Instagram post was shared on Reddit Monday. Tommy McClay's Instagram account has since been removed, and the post is no longer viewable. Denver police said the officers in the photo have been reassigned and will not be working the protests. After the photo was shared on social media, Denver Police Chief Paul Pazen ordered an internal affairs investigation into the matter, according to a statement released on Twitter from the Denver Police Department. 700

Emily Zamourka isn't a trained singer, but her soaring voice fills a Metro subway station to the delight of Los Angeles commuters.She became known as the "Subway Soprano" on social media after the Los Angeles Police Department posted video an officer recorded of her performing Italian composer Giacomo Puccini's famous aria "O mio babbino caro" while holding bulging shopping bags with her left arm and a cart full of belongings with her right hand."4 million people call LA home. 4 million stories. 4 million voices...sometimes you just have to stop and listen to one, to hear something beautiful," 613

Ditching the alcohol without ditching the taste sounds impossible, but more brewers are getting on board with non-alcoholic beer.Miller Coors is one of the most recognizable beer companies that are changing things up. They just launched their non-alcoholic beer, Coors Edge."We are a beer company and we are going to be a beer company for the future but we are trying to meet our consumers’ changing tastes,” said Matt Hargarten with Coors.Non-alcoholic beer is nothing new, but liquor store owner Mark Crowder remembers the old version."It used to taste like sugar sweetness trying to turn itself into alcohol,” said Crowder. “It was horrible."Companies are now stepping up the flavor game, like Heineken, Clausthaler and Brew Dog, along with smaller breweries.Non-alcoholic beer begins its life as alcoholic beer. Hargarten says taking alcohol out of beer is extremely technical and expensive.For some people, they think non-alcoholic beer is pointless, but others feel it’s healthier. Non-alcoholic beer has less calories and carbs. Some have as low as 26 calories per can or bottle.But, is it really healthier? We spoke with a dietitian who says it’s healthier for people watching their weight. But, if you like drinking the real deal, she says if women only have one a day and men only have two beers a day, that’s healthy too. "The non-alcoholic trend is growing in the United States,” said Hargarten. “In the last year, it grew 8%."It’s safe to say this trend is not going away anytime soon. 1510

Cellphones and social media were at the heart of the investigation that led to an arrest in the killing of a University of Utah student who vanished nearly two weeks ago.Investigators tracking her cellphone discovered that 23-year-old Mackenzie Lueck and the man expected to be charged with her murder were both in the park where she was last seen on June 17 within a minute of one another.That was around the time Lueck's phone stopped receiving data or location services, police said.Ayoola Ajayi, 31, was arrested Friday and is expected to be charged with aggravated murder. He also faces charges of aggravated kidnapping, obstruction of justice and desecration of a body, according to Salt Lake City Police Chief Mike Brown.Police find her pictures on his phoneAfter Lueck disappeared, the suspect originally denied knowing what she looked like, Brown said. But several pictures of her were found on his phone, and the "digital footprint" has continued even after the arrest, police said.An Instagram account that Lueck's sorority sister confirmed belongs to the missing student followed another user on or about Wednesday, CNN verified.Brown confirmed that investigators are looking into the activity on the account."This is a digital forensic investigation," he said. "This is covering computers, cellphones, IP addresses, URLs, texting apps."Forensic evidence is also discovered But the investigation is not just limited to digital footprints.Investigators also found forensic evidence after they searched Ajayi's home and property Wednesday, police said. As they did, his neighbors told police they saw him using gasoline to burn something in his backyard on June 17 and 18, Brown said.Police said the search yielded multiple items of evidence."A forensic excavation of the burn area was conducted, which resulted in the finding of several charred items that were consistent with personal items of Mackenzie Lueck," Brown told reporters.Police also discovered charred material that was determined to be female human tissue consistent with Lueck's DNA profile, he said. A mattress investigators have been trying to find has been located, police tweeted Friday night, without providing additional details.She stopped communicating about 3 a.m. Lueck texted her parents at 1 a.m. on June 17 when she landed at Salt Lake City International Airport, police said. She was seen on airport surveillance walking through baggage claim before taking Lyft to Hatch Park.The Lyft driver said she did not appear to be in distress, according to Salt Lake City police assistant chief Tim Doubt.Police said Friday that all communications with Lueck's phone ceased around 3 a.m. that morning -- the same time they said she left the park with the suspect.Phone records showed her last communication was with the suspect, Brown said. Her family and friends did not see or hear from her after that morning. Her sorority sister told CNN affiliate KSL that Lueck had also missed exams."She's extremely dedicated," Ashley Fine told the TV station. "She would never miss her midterms or anything like that. She hasn't been home. She didn't show up to work, or anything."A suspect is arrested After the suspect's arrest Friday, Brown contacted her parents to tell them the news. They were "devastated and heartbroken by this news," he said."This is one of the most difficult phone calls I've ever made," he said.The suspect lived about five miles from the park where Lueck was last seen.According to his LinkedIn page, he is a former information technology specialist for the US Army and recently worked for Dell and Goldman Sachs. CNN has reached out to the US Army and Dell for comment. 3686

Dolphins may be in serious trouble as temperatures rise with global warming.After a heat wave struck the waters of Western Australia in 2011, scientists noticed that warmer ocean temperatures caused fewer dolphin births and decreased the animal's survival rate.The heat wave caused the water temperature of an area called Shark Bay to rise about 4 degrees above the annual average. After the heat wave, the survival rate for some species of 453

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