CONCORD, Calif. (KRON) — Two businesses in Concord were rammed with cars Monday night in separate attempted break-ins. Both incidents were caught on video, and it is believed that the same crew of thieves were behind them.

In both cases, the suspects left empty-handed, but caused significant damage in the process

Until the roll-up door at one of the businesses is replaced, Tyler Hagen, who owns HSD Engineering on Solano Way, is using a car to block access to it. It is backed in, just like how the suspects who rammed the door Monday night positioned their car during the attempted burglary.

“Luckily, the only thing that saved them from completely demolishing through our building was our recently purchased forklift. It also has doubled as the new way to open and close the door,” said Hagen.

Just after 9:45 p.m. Monday, a group of suspects used a car with a stolen license plate to try and break in. But Hagen says once they took a look inside, they chose to leave without stealing anything from the high-vacuum repair operation.

“Just decided to trash their car, my door and run away,” Hagen said.

“I suspect they were looking for a marijuana grow house,” said Hagen’s business partner, Alex Lobodovsky.

Lobodovsky co-owns the building with Hagen and runs Sertec, Inc. next door.

“Because that forklift was in the way, they would have been inside this building and probably taking out a customer job — you know, belongs to the lab,” said Lobodovsky.

Lobodovsky and Hagen are offering a $500 reward for information leading to arrests and convictions in this case. That’s on top of the more than $2,000 it’s going to cost to repair the damage.

“It’s not cheap, but we’re going to just take it out of pocket,” said Hagen.

Just five minutes before the attempted burglary, a business owner less than two miles away shared surveillance video with KRON4.com showing what appears to be the same crew doing the same to Micro-Measurements and Pacific Instruments on Pike Lane.

Again, the would-be thieves rammed the car into the roll-up door, looked inside and then took off without anything. The sister-companies manufacture high-accuracy data systems to customers like NASA and the U.S. Military.

Hagen hopes someone recognizes the suspects.

“Send a message and just teach other people to not do this type of stuff. It’s not beneficial to anybody. Nobody won here,” said Hagen.

Reports have been filed with the Concord Police Department in both cases.