UPDATED: Four Arrests Made in Monaco Robbery

Four suspects who authorities believe are tied to a are now in custody.

The Orange County Sheriff's Department is withholding details of the arrests—made Wednesday—until a later date. Sheriff Sandra Hutchens was scheduled to release the suspects' names and other information Thursday afternoon during a news conference, but the briefing has been postponed.

Would-be robbers Robert Earl Avery and Desmond Brown, both 39 and of Los Angeles, were shot dead June 27 when they attempted to rob . in San Juan Capistrano. Authorities have said that a store employee fired his gun after one of the .

Five warrants were served Wednesday in various locations in connection with the robbery, sheriff's spokesman Jim Amromino said. He was not sure if the arrests were made as a result of the warrants.

At least one other man was seen on surveillance video entering the store with Avery and Brown. On the day of the botched robbery, investigators spent hours combing the surrounding area searching for him.

The third suspect made his getaway in a light blue Toyota Camry, which was reported stolen out of San Bernardino and was later recovered near the jewelry store.

All three suspects were wearing masks and gloves, investigators said told City News Service last week.

The four suspects arrested Wednesday could face murder charges under the legal theory that committing a crime that leads to a death makes a defendant accountable for murder, Amormino told City News Service.

—City News Service contributed to this report.