BUFFALO, N.Y. -- Three were arrested early Sunday morning after they brought two loaded handguns to the Peace Bridge, according to a news release from U.S. Customs and Border Protection (CBP).

CBP officers first saw the vehicle at about 4:30 a.m. after it had made a wrong-way turn on the Peace Bridge.

A 25-year-old was driving the vehicle with two passengers, a 22-year-old man and a 22-year-old woman. All three are U.S. citizens.

When stopped and asked what they were doing, all three said they had accidentally entered the bridge and they were trying to get back to the U.S.

After a further investigation, CBP officers found two loaded handguns, a 9mm Taurus and a .32-caliber US Revolver ammunition, in the vehicle. They also found 2 .32-caliber rounds and 12 9mm rounds in a duffel bag in the trunk of the vehicle.

Street clothes and a mask were also found in the trunk.

All of these materials were seized and the three suspects were turned over to the Buffalo Police Department, CBP officers say.