NEW ORLEANS, LA (WDSU) — NEW ORLEANS -- New Orleans police evacuated their headquarters building Thursday night after crime lab technicians discovered two live hand grenades inside a vehicle belonging to a man who killed three people earlier in the day, before he was shot dead by an officer.
Click here  to see an image gallery of the NOPD Headquarters Evacuated
Police said the grenades were discovered inside a car brought in as evidence from the earlier shooting incident. That incident also left an officer slightly wounded. The vehicle was being processed by crime lab technicians when the discovery of the explosives was made.
The technicians found the live grenades in a safe located in the back of the car.
All five floors of the NOPD building were evacuated for about 90 minutes. Because of the hour of the discovery, slightly more than two dozen people were involved -- far fewer than had been in the building earlier in the day.
Mayor Mitch Landreiu, Police Superintendent Ronal Serpas and Crime Commissioner James Carter are among local officials expected to appear at a news conference Friday morning. Details of the event were not released, but they are likely to address a recent spate of violence, including the shootings that were connected to the hand grenade scare.
The bomb squad was called in to deactivate the grenades and officers closed off several streets around NOPD headquarters, which is located at 715 South Broad Street.