Police in Nassau, Suffolk and New York City are on the lookout for a bank robber who wears a fedora and strikes every few months, usually in bad weather.

Police say the middle-aged, heavyset man may be responsible for 10 heists. They say he hit an Emigrant Savings Bank in Elmont and a Bank of America in New Hyde Park Monday, and a Roslyn Savings Bank in New Hyde Park Friday.

Detective Sgt. John Giambrone of the Nassau Police Departments says the man first surfaced in May 2006 after robbing banks in Suffolk County. In each heist, police say, the man demanded a note from the teller and did not show a weapon.

Police say they have no solid leads on the man?s identity. They are asking anyone with information to call Crime Stopper at 1-800-244-TIPS.