PHILADELPHIA (AP) — Police say a gunman in a bulletproof vest has opened fire on the streets of Philadelphia, killing five people and wounding two boys before he surrendered to responding officers. The shootings took place over several city blocks, and dozens of spent shell casings were found. No connection was immediately known between the victims and the shooter. Police Commissioner Danielle Outlaw said at a news conference Monday night that the gunman had an “AR-type” rifle, multiple magazines, a handgun and a police scanner. The violence marks the country’s 29th mass killing in 2023, according to a database maintained by The Associated Press and USA Today in partnership with Northeastern University. That’s the highest on record.