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Massachusetts State Police and Needham police are investigating after a bullet was shot into the TripAdvisor building Wednesday morning.

In a statement posted to Facebook, Needham police said a TripAdvisor employee called authorities at approximately 7 a.m. after a colleague heard the shot. Police confirmed a bullet was shot through a window on the fourth floor of the building on 1st Avenue.

No one was injured, and the incident appears to be isolated, police said. No further details were available, according to police.

Anyone with information is asked to contact Needham Police Lt. Chris Baker at 781-444-1212.