The FBI and Houston Police are hoping the public can help them identify the killer who they say "ambushed and executed" Brinks guard Alvin Kinney in front of a Galleria area bank in the 5700 block of Westheimer on February 12.
A Brinks armored guard team was making a delivery at Capital One bank when at least three armed assailants wearing body armor and face-shield masks approached Kinney and opened fire.
A second Brinks guard returned fire as the assailants backed up a stolen truck and stole several bags of cash.
A reward of $100,000 has been offered for information leading to the arrest and identification of the masked gunmen.
Anyone with information is asked to call 1-800-CALL-FBI or Crime Stoppers at 713-222-TIPS.