Surveillance footage captured the moment a gunman drove through a fence and opened fire at Citibank's office campus in Tampa, Florida.

The attack killed a 41-year-old female employee and left four others with non-life-threatening injuries. The gunman then entered the building, where an armed Citibank security guard confronted and shot him. The suspect later died at a hospital.

According to Hillsborough County Sheriff Chad Chronister, the suspect had threatened a law firm handling a debt collection case involving approximately $2,500 earlier that day. Around 3,200 people were on the campus when the shooting occurred.