CARBONDALE – Police in Carbondale were made aware by an unidentified source Tuesday night of a threat of school violence at Carbondale Middle School today.

Police say the credibility of the threat is unknown.

The school plans to remain in session today with an increased police presence.

Anyone with information should contact Carbondale Police at 618-549-2121.

Questions regarding Carbondale Middle School should be directed to school staff at 618-457-2174 after 7:30 a.m.