The scene near Harvard’s Science Center was tweeted by an observer at 12:42 p.m. (Photo: TweetTheodora)

A bomb scare early Saturday at Harvard University played out much like one in December.

Harvard University Police got a call from an unidentified person at about 9:45 a.m. Saturday saying explosive devices had been planted at various locations around campus, leading university police to contact other departments – in this case, Cambridge police and fire personnel, then even more departments – for help. The locations identified by the caller were evacuated and searched.

When no bombs, the locations were declared cleared at 1:40 p.m., police officials said.

Just over a half-year ago, four buildings on campus were evacuated after police got an 8:40 a.m. email saying there could be bombs inside, but about five hours of searches turned up nothing. Later, 20-year-old Harvard psychology student Eldo Kim was charged with causing the bomb scare because he wanted to avoid taking a test at finals time.

As of April, Kim had yet to be indicted, according to The Harvard Crimson. He could be sentenced to prison for up to five years, three additional years of probation and a $250,000 fine.

In the latest scare, which took place during summer doldrums and on a weekend, the campus search was done by Cambridge Police, including four of the force’s new Police Bomb Detection Dogs, along with MBTA Transit and Boston Police. Boston FBI, the Boston Regional Intelligence Center and university police are investigating, “given the gravity of the situation,” a press release said.

Anyone information on the bomb report is urged to call the Boston Field Office of the FBI at (617) 742-5533 or the Harvard University Police Department Criminal Investigation Division at (617) 495-1796.