Authorities in Union County, N.J. placed a Westfield high school on lockdown twice in the same day following two different threats to the school.

The sources of both threats were identified and questioned by police, but no criminal charges were immediately filed.

Westfield High School was forced into lockdown twice on Wednesday, Feb. 12, following threats on social media, authorities said. At 8:08 AM, officers responded to Westfield High School following reports of a potential threat through a conversation on a social media platform,

Police say the first lockdown occurred just before 8:15 a.m. after information about a possible threat appeared on social media.