The FBI said Friday it obtained arrest warrants for an employee of an armored car company and his girlfriend as they investigate the disappearance of $7 million in cash and checks from safes.

The FBI appealed for tips on finding Roger Lee Dillon, 22, and his girlfriend, Nicole Boyd, 24. Dillon was charged with bank larceny, and Boyd was charged with aiding and abetting, the FBI said in a statement.

The couple may be accompanied by Boyd's mother, Sharon Gregory, 57. All three are from Youngstown. No arrest warrant has been issued for Gregory, the FBI said.

A pickup truck belonging to Dillon was found in a parking lot in Salem after a resident recognized it from news reports, police said. The FBI towed the truck on Thursday.

The disappearance of the money was discovered Monday at an armored car garage of AT Systems International. Two drivers discovered the safes had been cleaned out and called police.

Officials said the alarm system was deactivated, safes were opened and money to be delivered to banks was gone. Then the alarm system was reactivated. Dillon didn't show up for work Tuesday, the FBI said.

He began work at AT Systems International's Liberty office less than one year ago, said a representative of Garda, the company that purchased AT Systems in April. AT Systems offered a $100,000 reward for information leading to the arrest and conviction of anyone responsible.

There is no phone listing for Dillon or Boyd at the address they shared. Gregory has an unlisted phone number and could not be contacted.