Authorities in California are encouraging those who were involved in picking up the cash that fell out of an armored truck on a highway return the money.

The situation occurred on the northbound side of Interstate 5 in San Diego on Friday.

Officials say an armored truck was headed to the federal reserve when one of the doors  flew open and bags of money began spilling out across the highway.

Several drivers were seen pulling over to grab the cash.

“There was cash all over the freeway,” the California Highway Patrol  spokesperson told CNN affiliate KFMB. “People stopped in the lanes, completely blocked the lanes, started picking up the cash.”

Authorities are urging anyone who was involved in taking the cash to return it immediately.

Two people have already been taken into custody after they became stuck at the scene after accidently locking their keys inside of their vehicle.

“We’re working with the FBI now, it’s a joint investigation and if you have picked up any of the cash, I highly suggest you turn it in to the CHP office immediately because we do have a lot of evidence to follow up on,” he said.