OXFORD – An investigation into a bomb threat at TD Banknorth on Main Street briefly closed the bank Wednesday morning. No bomb was found.

Employees had already evacuated the building when police were called at 9:10 a.m. No other businesses in the plaza were shut down or evacuated.

“They just called, made the threat, and hung up,” said Sgt. Mike Ward of the Oxford Police Department.

Chief Jon Tibbetts said Maine State Police brought in a bomb-sniffing dog to look for an explosive device, but found nothing. The Oxford County Sheriff’s Office provided additional coverage, and the Norway and Paris Police Departments were also initially called.

Tibbetts said police were on the scene for nearly two hours before the bank was reopened. He said it was unusual for a bomb threat to be made on a bank.

A representative at the bank deferred questions on the threat to the police.

Ward said the threat remains under investigation. He said anyone with more information should call the Oxford police at 539-4414.