PRINCETON - Princeton University has reopened after officials evacuated 6,900 students and faculty members from its campus for about eight hours following a bomb threat Tuesday morning.

Officials say the phoned-in threat targeted several buildings on the campus.

A spokesperson from the university says the school brought in bomb-sniffing dogs to go through each building. No explosives were found.

Summer programs are in session at Princeton. University operations are reported to be back to normal, but school officials suggest that students and faculty check with organizers concerning evening events.

The evacuation at Princeton today is the second time in two weeks that police have responded to a threat at a large state university. Last week, Essex County prosecutors arrested a former student of Seton Hall University for allegedly posting a threat on Facebook.