richard mendez October 16, 2023 6:20 am Search for Philly cop's killer continues The person or people responsible for gunning down Philadelphia Police Officer Richard Mendez stretched into a fifth day Monday morning. NBC10’s Randy Gyllenhaal reports on developments from over the weekend. US & World Videos 1:36 Nearly 4,000 SEIU members kicked off their convention with a march and rally 0:24 Elderly couple injured after home explosion in Chester County 2:33 Pro-Palestinian protesters remain camped out on Drexel's campus 2:31 Pro-Palestinian protestors set up at Drexel 0:21 Man killed outside West Philly restaurant