A gunman opened fire in Pittsburgh's Tree of Life Synagogue on Saturday during morning services. The suspect in custody was identified as Robert Bowers, 46. — Police said there were "multiple casualties," including four police officers. They have confirmed that there were fatalities, but not how many. — A bomb squad investigated but found no explosives. — Pittsburgh Director of Public Safety Wendell Hissrich said the scene inside the synagogue was "horrific. One of the worst that I've seen." — The FBI was handling the investigation as a hate crime. — Blood banks in Pittsburgh were extending their hours for people who wanted to donate. — Pennsylvania Gov. Tom Wolf called the situation "serious" and encouraged people to stay away from the Squirrel Hill neighborhood where the shooting took place. — Nearby Carnegie Mellon University canceled all activities for the day. — New York and Los Angeles were adding extra security precautions around houses of worship. — President Donald Trump suggested the U.S. "stiffen" its death penalty laws in response to the crime.