STOCKHOLM — She was off duty and wearing a bikini but that didn’t stop Swedish police officer Mikaela Kellner from catching a suspected thief.A photo of Kellner pinning the suspect to the ground was trending on social media in Sweden this week.“My first intervention while wearing a bikini during my 11 years as a police officer,” she wrote on Instagram.Kellner and three friends were sunbathing Wednesday in a Stockholm park, a homeless man selling newspapers approached, she told Swedish newspaper Aftonbladet.(nypost.com)…[+]