CHICAGO — The man that prosecutors say strangled 15-year-old Amarise Parker to death last week in Chicago has another active strangulation case in Colorado.
After the murder, Joshua Williams made “over 50 searches for terms related to murder and strangulation” on his phone, according to a detention petition filed against him on Wednesday. Judge David Kelly granted the detention request.

Parker, who was dating Williams, stayed at his home in the 7200 block of South Phillips on December 11. Neighbors reported hearing the couple argue through the night, prosecutors said. The next evening, Williams allegedly called his cousin and a friend and told them that Parker was foaming at the mouth.
His cousin called 911, and paramedics found Parker inside a closet at Williams’ home, prosecutors said. The medical examiner ruled her death a homicide by strangulation.
Investigators searched Williams’ phone and learned that he had searched for a host of suspicious topics, including “how to explain asphyxiation death” after Parker died, according to the allegations. The phone also contained videos of Parker that were recorded after she died, prosecutors said.
Judge Kelly supported his detention order by noting that Williams has an ongoing case for assault causing injury in Colorado. The charge originated as strangulation, Kelly said.
