The University of Minnesota gave students an all-clear Monday afternoon after asking them to seek shelter following an attempted robbery at one of its Minneapolis campus buildings.

The original alert sent shortly after 3 p.m. said the university has received reports of “a person possibly armed with a gun” at Anderson Hall, which houses classrooms. It asks students and staff on the West Bank campus to “shelter in place until further notice.”

The university said the incident started with the reported attempted robbery of a student at Anderson Hall. The suspect pulled a gun on a student in an attempt to steal a laptop, officials said. The suspect then fled and remained at large. There was no shooting.

Campus officials told students and staff they no longer needed to seek shelter shortly after 4 p.m. University spokeswoman Brooke Dillon said a suspect had not been apprehended, but university police finished a thorough search of the West Bank campus.

“They’ve decided its pretty safe to given an all clear,” she said. “No buildings are on lockdown.”

All classes and other activities were to go on as planned, she said.

The university sent out alerts on Twitter and through text messages, as well as placing a notice on its website.

Anyone with information about the suspect was asked to call 911.

Meanwhile on Monday afternoon, an East Bank campus building was evacuated because of a suspected gas leak, but no gas was found.

Students were cleared from the chemical engineering building. But the U said students were allowed back in about an hour later after no gas was found.