A Toronto-bound Air Canada plane was forced to turn back to Rochester, N.Y., after a man apparently made a confusing remark about a bomb that may have been the result of language barriers.

A Sri Lankan couple carrying Canadian passports suspected to be fake were taken into custody by Homeland Security officials late Wednesday morning.

An aircraft sits at the Rochester International Airport Wednesday as a robot removes luggage.
(Democrat and Chronicle/Jay Capers/Associated Press)

Air Canada Flight 7405 departed at 10:15 a.m. ET, but shortly after takeoff was forced to return to Rochester, where all 11 passengers were removed.

Officials said the flight was returned to Rochester as a precaution.

The U.S. Department of Homeland Security has not yet concluded its investigation, but there are reports that the plane was forced to turn back because the man allegedly made a comment about a bomb. However, it is believed there were significant language barriers.

But the two in custody were identified as suspicious passengers before the flight boarded when customs officers conducted a search of their files.

When the couple was taken into custody back in Rochester, the woman apparently became upset, complained about chest pains and said she needed her bag.

Officials from a county bomb squad, the Federal Bureau of Investigation, the Joint-Terrorism Task Force, and the Customs and Border Protection Bureau of Homeland Security were on scene.

There are no details on whether Canadian officials are involved in the investigation.