Several New Jersey schools are on alert following an FBI alert warning of a "threat of violence" made online against "a university near Philadelphia" on Monday.

Rowan University in Glassboro tweeted about the alert on Sunday night and also sent an email to students.

reads the tweet. In an email the school noted its attendance policy "allows students to not attend class when they have a reasonable concern for their safety." but are responsible for making up any missed work. Some students tweeted that the school should have canceled classes.

Counseling was also made available for concerned students.

Staff and students of Rutgers University's Camden campus were also alerted about the threat. "In an abundance of caution, the Rutgers University Police Department is working closely with county, state, and federal agencies, as well as police and security units at other area colleges and universities, to monitor and assess the situation," read an email.  "On-campus security patrols will be increased throughout the day," which urges students to report anything suspicious to campus police.

Rider University Media Relations Director Kristine Brown told New Jersey 101.5 an email was sent to students at the Lawrence Township school on Sunday night "out of an abundance of caution."

left several people dead and others injured at a community college in Oregon. The posting warned of an action that could take place around 1 p.m. on Monday.

It wasn't immediately clear early Monday if Princeton University or Stockton University had issued any alerts. None were featured on the schools' social media feeds or websites, and early-morning messages by Townsquare Media had not yet been returned.