Editor's note: This article has been updated with additional comments and clarifications from Redondo Beach Police Department spokesman Sgt. Shawn Freeman.
An assault rifle that caused the evacuation of several homes in South Redondo Beach on Thursday morning belonged to a member of a federal law enforcement agency under the Homeland Security umbrella, according to a spokesman for the Redondo Beach Police Department.
Police evacuated multiple residences in the 400 block of North Broadway after a neighbor inadvertently brought home the government-issued assault rifle, said Sgt. Shawn Freeman.
The resident found a case that looked like a carrying case for a musical instrument in the open area near Broadway and Vincent Street, and brought it home to the 400 block of North Broadway to open it, Sgt. Edward Jackson told Patch.
"When they opened it up, it had an assault rifle in it," Jackson said.
Police received a call about the rifle at 8:12 a.m., according to Freeman.
Because police didn't know if explosives were also in the unusual carrying case, officers evacuated surrounding residences as a precaution and called the Los Angeles County Sheriff's Department Bomb Squad, Freeman said.
The bomb squad ultimately determined that the package was exactly what it appeared to be once it was opened: a rifle in a case, Jackson said.
Police confiscated the rifle, and traced its owner, Freeman said. Investigators will determine if the rifle was accidentally left out or if it was stolen from a vehicle once they've interviewed the owner.
The resident who found the gun will not face charges, Jackson said.