The fire on Plum Crazy II was suspicious, according to policeThe fire on Plum Crazy II was suspicious, according to police (CBC)

Police are calling a fire on a fishing boat docked at the Ballast Grounds Wharf Wednesday suspicious.

Both fire and police crews responded to the scene on Commercial Street in North Sydney just after 3 a.m.

The Cape Breton Regional Police then placed security on the wharf.

Several fishermen in the area told the CBC they don't think the fire is suspicious. They said there's always people monitoring the wharf.

The cause of the fire is under investigation.