Editor's note: Authorities on March 1 confirmed a PennLive report that Deputy U.S. Marshal Christopher Hill was killed by friendly fire Jan. 18 while serving an arrest warrant with a task force of law enforcement officers. Police say Kevin Sturgis opened fire on police as they were arresting his girlfriend inside the Harrisburg home but he did not fire the fatal shot that killed Hill.

Several U.S. Marshal vehicles received parking tickets outside of Harrisburg Hospital's emergency room after one of their own had been killed in a shooting this morning in the Pa. capital.

One U.S. deputy Marshal was killed and two officers with the Harrisburg and York police departments were injured in this morning's shooting at S. 18th and Mulberry streets.

Several US Marshal vehicles parked outside Harrisburg Hospital ER have been ticketed. To whomever did this: they may have a good case to fight it today. @PennLive pic.twitter.com/Oil8rvU8B6 — Joe Elias (@josephmelias) January 18, 2018

Harrisburg Mayor Eric Papenfuse said this sometimes mistakenly happens when parking-enforcement officers do not recognize unmarked vehicles.

"It will be a straightforward process to have the tickets waived," Papenfuse said.

More details about the shooting are expected to be released at a press conference at 2 p.m.

This post has been updated with additional information.

Reporters Joe Elias and Christine Vendel contributed to this report.