Gunman responsible for Philadelphia college lock down arrested

The Community College of Philadelphia was on lock down Tuesday morning after police received a report that a man pulled a gun on a student.

A suspect in the case was later apprehended, Tanya Little of the Philadelphia Police Department said shortly before noon. No shots or injuries were reported.

Around 9:30 a.m., police were called to investigate a report that a man had pulled a gun on a student outside a campus building as the two argued, Philadelphia Police Commissioner Charles Ramsey said.

The man with the gun then entered the building, which police eventually searched. After not finding the man, officers searched other campus buildings out of an abundance of caution, he said.

The student knows the man who had the weapon, Ramsey said.

"There was an argument over something -- I do not know at this time what the argument was over," he said.

The school, in a tweet posted shortly before 11 a.m. ET, said the college's main campus was on lockdown because of "police activity."

"Police activity on campus. Main campus is locked down at this point. Shelter in place in progress," the tweet reads.

The Community College of Philadelphia is a public school that had 15,050 full-time students, and 34,337 students overall, in the 2013-2014 school year, according to its website.

This is a developing story. Check back for updates.