SHERMAN OAKS—A chain of residential mail thefts has prompted the U.S. Postal Inspection Services to launch an investigation involving two suspects that have been connected to several incidents in the Sherman Oaks and Studio City areas.

NBC4 aired surveillance footage on Sunday, May 15, which pictured a dark-haired man, and blonde-haired woman stealing mail from a Sherman Oaks condominium complex on May 8 at around 2:30 a.m.

The surveillance video showed the duo access the lobby of the complex using a confidential code – they cleaned out the mailboxes and fled.

Studio City resident, Nader Kazemi, contacted NBC4 upon seeing the report – and told reporters that on April 1 around 3:45 a.m., surveillance footage pictured a man and woman (that looked identical to those in the footage from the Sherman Oaks complex) coming in and out of his secure building on Moorpark Street.

The suspects take either the stairs or elevator to the mailroom and then use what could potentially be post-office keys to unlock the mailboxes and take handfuls of letters and packages – the female suspect shoves them into her purse.

The U.S. Postal Service has taken steps to retrofit collection boxes where outgoing mail is both dropped off and picked up by postal service workers – making them more tamper-proof.

U.S. Postal Inspection Service Spokeswoman Stacia Crane advised, “The biggest help from the community we can get is take your mail out of the mailbox every day.” She added, “That way, there is nothing left for criminals to take.”