It happened just after Noon Friday at the HSBC Bank on Broadway in Elmhurst.
Once the truck arrived at the branch, one of the armed guards went inside the bank to pick up the deposits.
As he was leaving, he was attacked by three Asian or Hispanic men at gunpoint while in the ATM lobby.
As the suspects fled they sprayed the guard with mace.
The three suspects fled on foot, west bound on Broadway after making off with cash from the guard.
The men were dressed in heavy winter clothes and may after leaving on foot driven in a navy blue or black Ford Explorer getaway vehicle that was described by witnesses as dirty from the winter weather and missing a front license plate.
The FBI, working closely with the NYPD, is asking for the public's help identifying and locating the three armed men.
GardaWorld is offering a reward of up to $50,000 for information leading to the capture, arrest and conviction of those responsible and the recovery of the stolen funds. The company reserves the right to allocate the reward among multiple sources of information.
Anyone with information is asked to call the FBI at 212-384-1000. Tipsters may remain anonymous. The suspects should be considered armed and extremely dangerous.