Two Pennsylvania bank robbers are believed to have had military training and are being described by the FBI as 'armed and extremely dangerous'. A pair of masked men armed with handguns have robbed three banks in the Pittsburgh area so far this year, most recently on April 10. The unknown men, who are seen on surveillance footage pointing their guns at bank employees' heads, have threatened to kidnapping those at their targets and shoot police. However, the way that the two men handle their weapons has led the FBI to suspect that the thieves are actually former police officers themselves. Scroll down for video . Police believe that the two bank robbers suspected in a string of recent heists may have police or military training because of the way they handle a weapon . Authorities say that the robberies, most recently on April 10 (pictured), have become increasingly violent, with the thieves threatening kidnappings and saying they will shoot police if engaged . Surveillance video shows one masked robber holding his finger stretched along the barrel of his gun, just off of the trigger, a safety method used by law enforcement. The men, who wear dark sweatpants and sweatshirts, are also seen jumping over the counter as they begin their heists. 'These folks have some kind of training in firearms, meaning they could be former military, they could be law enforcement, either former or currents,' the FBI's Patrick Fallon said. 'Street punks don’t usually use holsters,' he told WPXI. The men, both 5'8''-5'9'' are described as in excellent physical condition. One of them climbs behind the counter to collect cash as the other threatens bank employees with a gun . The clothes worn during the robberies are thought to be quickly discarded by the robbers, who have also used a very common car as a getaway vehicle . Authorities warned that the criminals have become increasingly aggressive and violent during robberies on January 24, February 21 and April 10. The suspects are described as white, 5'8'' to 5'9'',  of medium and larger build and in excellent physical shape, according to CBS Pittsburgh. They were recently seen escaping in a nondescript gray Toyota Corolla, one of the most common cars in the world. Both men are believed to be from Pittsburgh because of their accents. Tt is thought that they quickly get rid of their baggy clothing after making a getaway. The FBI is offering $10,000 for information leading to their arrests.
Masked men have robbed three Pittsburgh area banks at gunpoint.
One of the criminals has a holster and uses police weapon safety method.
Thefts are becoming more violent, robbers have threatened kidnapping.