Two men have been arrested and charged with plotting a terrorist attack against a Canadian passenger train, The Associated Press reports.

The Royal Canadian Mounted Police said Monday that Chiheb Esseghaier and Raed Jaser, who live in Montreal and Toronto areas, were conspiring to carry out an al-Qaida supported attack against Via Rail, but posed no immediate threat.

Police representatives told reporters that the attack was in the planning stage. They declined to say where the two men were from, although they did specify that they were not Canadian citizens, AP reports.

The investigation was part of a cross-border operating involving Canadian law enforcement agencies, the FBI and the U.S. Department of Homeland Security.