Two dozen Canadian nationals were charged for their alleged roles in a scheme that targeted seniors by posing as relatives asking for emergency bail.

A group of 25 Canadians who go by code names like “Muscles,” “Truck,” and “Keanu” have been indicted for a “grandparent scam” that targeted U.S. seniors, according to the U.S. District Attorney’s Office in the District of Vermont.

Dozens of Canadians are facing charges for scamming millions of dollars out of elders in the U.S., according to the office of the acting state attorney for Vermont. The victims span from almost every state in the country.

Federal prosecutors allege those charged claimed a relative, usually a grandchild, needed money for bail after an arrest.

The 25 Canadians are accused of calling seniors in over 40 states, pretending to be their grandchildren and asking for bail money. Authorities warn such scams are getting increasingly sophisticated.

Canadians are charged in connection to scam that cost American retirees $21 million over a three-year period, according to authorities.