PITTSBURGH (BNO NEWS) — Carnegie Mellon University in Pittsburgh on Friday evacuated three buildings on campus because of an unspecified security threat, the university said.

“There has been an unconfirmed security and safety threat to Wean Hall,” the University wrote in a statement just before 1 p.m. local time. Police evacuated and secured Wean, Doherty and Hamerschlag halls as a precaution.

Carnegie Mellon Police Chief Tom Ogden later confirmed a sweep of Wean Hall had been completed, and said no suspicious activity had been found. The buildings have been re-opened.

Campus Police, Pittsburgh Police and other local law enforcement agencies were involved.

PHILADELPHIA (BNO NEWS) — Police officers on Friday arrested a 28-year-old man on a warrant issued yesterday following two bank robberies in Philadelphia, federal officials said.

Michael P. Bellini was taken into custody without incident by officers from the Pottstown Police Department at a local motel.

Bellini was charged yesterday in the U.S. District Court for the Eastern District of Pennsylvania with the robberies of the Citibank branch located at 1211 Walnut Street in Philadelphia on New Year’s Eve and on last Wednesday.

“The Pottstown Police Department received an anonymous tip call that Bellini was staying in a motel in Pottstown,” said Special Agent J.J. Klaver of the FBI. “They located him inside a room and took him into custody without incident.”

Bellini was turned over to the custody of the FBI following his arrest. “The identification of Bellini, and the tip that led to his apprehension by the Pottstown Police Department, were the result of media coverage of the two bank robberies and of his fugitive status,” Klaver said.

The 28-year-old has no known address, but was known to frequent motels in the Norristown and Pottstown areas.

The FBI described Bellini as “armed and dangerous” when a warrant for his arrest was issued on Thursday.

LONDONDERRY TOWNSHIP, PENNSYLVANIA (BNO NEWS) — More than one-hundred employees working inside the shutdown Three Mile Island Unit 1 containment building were sent home on Saturday after a small amount of contamination was found inside, officials said on Sunday.

About 150 employees were inside when the airborne radiological contamination alarm went off around 4 p.m. EST on Saturday.

The unit of the nuclear power plant in central Pennsylvania has been shut down since October 26 for refueling, maintenance and a steam generator replacement.

“No contamination was found outside of the containment building,” said Beth Archer, a spokeswoman for Exelon Nuclear. “Radiological surveys showed that the contamination was confirmed to surfaces inside the containment building.”

Archer says there was never a threat to public health and safety, and said there was no leak.

The spokeswoman said that a monitor showed a slight increase in a reading when new steam generators were being moved inside. The reading returned to normal quickly while two other monitors did not show any abnormal readings.

“Workers were sent home because work couldn’t continue until we clean the area,” Exelon Vice President Bill Noll, the senior executive at Three Mile Island, said. “We hope to be able to resume activities tomorrow.”

Exelon technicians on Saturday night were checking employees who had been working in the building at the time for possible unusual radiation exposure. One worker was found to have received 16 millirem of exposure, and other workers received contamination of lower levels.

The annual occupational dose limit for nuclear workers at Exelon Nuclear plants is 2,000 millirem and did not exceed personal contamination limits imposed by the Nuclear Regulatory Commission.

Numerous work activities were going on in the building at the time the alarm sounded, and Exelon engineers are working to determine the cause the incident. The NRC, Pennsylvania Department of Environmental Protection and local elected officials were notified of the event.

Exelon Corp. is one of the nation’s largest electric utilities.

The incident is being investigated.