Police say a Florida man made threats on social media to shoot up a Black Lives Matter rally.

Sarasota County sheriff’s officials said in a news release that 22-year-old Quintin Adkins was arrested last week after an “old friend” alerted authorities to his Instagram and Snapchat messages.

An arrest affidavit says Adkins threatened to attend a demonstration and shoot everyone.

Investigators discovered videos showing Adkins in a car pointing guns at passing cars.

He was then arrested and charged with one count of written threats to kill. He was released on bond Friday.