OAKLAND, Calif. – KTVU first reported a week ago that three mail carriers have been robbed in Oakland and Berkeley, plus one was a victim of attempted robbery.

Thieves stole keys from the carriers that are used to open mailboxes.

Now, we’ve learned that one of those keys may have been used to break into 24 mailboxes in one apartment building in Oakland’s Lake Merritt neighborhood early this week.

Kevin Harrington, the property manager, shared with KTVU surveillance videos of a mail theft that happened Tuesday around 2:40 a.m.

One video shows a man wearing a face covering casually walk up to a bank of mailboxes in the lobby.

He uses a key to unlock the panel, removes items and places them in a backpack.

Source: Mail thieves caught on surveillance camera in Oakland