4 officers killed in North Carolina shooting

Four security officers were killed and four others injured in an attack by gunmen in the US state of North Carolina. One of the injured is in critical condition.

The attack took place in the city of Charlotte on Monday (April 29) evening local time, reports BBC on Tuesday (April 30).

Local police said two gunmen were involved in the attack. At least one suspected attacker was found dead in the front yard of a barricaded home after a standoff that lasted three hours.

In a press conference, Charlotte-Mecklenburg Police Chief Johnny Jennings said that security forces went to a house to arrest a convicted felon for possession of firearms. But after entering the house, the gunmen started firing at them.

"Today we lost some heroes who were out simply trying to keep our community safe," the police chief told reporters.