The explosives that detonated and killed three L.A. County Sheriff’s Department deputies may have been found in a storage unit at an apartment complex in Santa Monica, a law enforcement source tells KTLA.

The investigation into the deaths of three L.A. County deputies, all killed by an explosion of military-style grenades thought to be inert, has made its way from Santa Monica to Marina del Rey where law enforcements officials were spotted outside an apartment complex Monday.

DreamPark, an immersive entertainment experience that uses mixed-reality technology, is officially open to the public in Queen Anne’s West Canal Yards. The mixed reality theme park is a 25,000-square-foot space that opened on July 19, located at 1100 W. Ewing St. near the Lake Washington Ship Canal.

Authorities are looking into whether grenades recovered from a Santa Monica apartment complex caused an explosion last week at a Los Angeles County Sheriff’s Department training facility that killed three members of its arson and explosives unit.

Set against the beautiful backdrop of the Ocean Front Walk, the event attracted media, beauty enthusiasts, and curious visitors in large crowds eager to learn about Ulike's latest innovations.

The device that exploded last week at a LASD facility and killed three detectives was a grenade, ABC News sources confirmed.

The driver, who had been fighting with people inside a music venue, was shot after driving into a group of people on the sidewalk, the LAPD said.

Following the Friday morning explosion, a task force consisting of the Los Angeles Police Department Bomb Squad, ATF, FBI and LASD returned to the Santa Monica neighborhood to serve a search warrant to find any additional explosive materials,

Investigators say they are following leads to determine the origin of the grenades that were discovered inside a Santa Monica storage area and transported to East L.A. where the explosion occurred Friday morning.

Discover the official competition schedule for the 2028 Los Angeles Olympics, featuring a historic swap of athletics and swimming events.