Joshua Zimmerman, a 30-year-old murder suspect from Houston, is in a standoff with police inside a Chicago restaurant after escaping from custody in Mississippi in June. He is wanted for the September 2023 murder of Keyanna Mercer and was also facing charges of attempted murder and armed robbery when he escaped from the DeSoto County Circuit Court. The U.S. Marshals Service located him on Tuesday, prompting a heavy police response, including the Chicago SWAT team, surrounding the restaurant. Authorities are working to resolve the standoff while planning his extradition back to Mississippi for further investigation into his escape. Despite being close to the Democratic National Convention, there's no indication of any connection to the event. The case has attracted significant media attention, reflecting the ongoing manhunt for Zimmerman since his escape.