(CNN) — Three people are dead, including a gunman who opened fire at a courthouse in Wilmington, Delaware, Monday morning, Delaware State Police said.
Two Capitol police officers were wounded after the gunfight broke out in the lobby of the New Castle County Courthouse around 8 a.m., said State Police Sgt. Paul Shavack.
Investigators say the man entered the lobby, pulled out a gun and began shooting.
News reports said the gunman's estranged wife was among the victims, but Shavack said he could not confirm that a family member was involved.
Wilmington Mayor Dennis Williams has told reporters that police killed the gunman.
Local and federal authorities responded and the courthouse has been evacuated.
The shooting came on the same day the police chief of Wilmington was scheduled to be in Philadelphia to attend a roundtable discussion about gun safety. Vice President Joe Biden, law enforcement officials and members of Congress were expected to be there.