A former Foxborough schoolteacher, Boy Scout leader, and swim coach now living in Florida stands accused of sexually abusing at least eight young boys, and potentially more, in a case stretching back decades, police said.

Foxborough police have charged William E. Sheehan, 73, of Fort Myers, Fla., with nine felony counts of indecent assault on a child under age 14 and two felony counts of indecent assault on a child age 14 or older. The assaults occurred in Foxborough, officials said.