16 injured in explosion at FBI training facility in Irvine

 Sixteen people were injured in an explosion at an FBI training facility in the Southern California city of Irvine on March 13, CBS News reports.

The incident occurred a little before 1 p.m.

Thirteen of the injuries were related to the noise of the blast, resulting in the victims suffering from dizziness and ear pain, the sheriff's department said.

Two of the injuries were to victim's legs, one of whom required surgery. Another person suffered a back injury but will not require surgery, the sheriff's spokesperson said.

The incident occurred during a joint training exercise between the OCSD's Bomb Squad and SWAT teams, the sheriff's spokesperson said, and the explosion happened inside of a small building on the FBI property. 

The FBI is now leading the investigation.