(CNN) -- A grand jury has brought felony charges against three Dallas, Texas, police officers who were caught on patrol car dashboard cameras beating a motorcyclist after a chase, prosecutors said Thursday. 

Officers Paul Bauer and Kevin Randolph were charged with aggravated assault with a deadly weapon by a public servant, a charge that carries a five-year minimum prison term, in the September 5 beating of motorcyclist Andrew Collins. A third officer, Henry Duetsch, was charged with third-degree felony of tampering with physical evidence, said Jamille Bradfield, a spokeswoman for the Dallas County district attorney's office. 

Bauer was also charged with assault and with official oppression, both misdemeanors. Randolph -- who was fired for failing probation after the incident -- was charged with official oppression and tampering with a governmental record, another felony. 

There was no immediate response to the charges from the three defendants. 

Prosecutors say Bauer and Randolph spotted Collins sitting on his motorcycle on a sidewalk the night of September 5. He drove off when the officers shined a spotlight on him, and they began pursuing him. An internal investigation found that Bauer and Randolph disregarded an order to stop the chase, with one of the officers saying, "Keep us going. I'm going to kick the s--- out of him." 

Collins eventually stopped, and when the officers spotted him, Bauer struck the bike with his patrol car. Randolph beat Collins with his baton after Collins dropped to all fours, and Bauer began hitting and kicking him, police said. And Duetsch, who arrived on the scene after Collins had stopped, turned another cruiser's dashboard camera away from the scene when he arrived. 
What were they caught doing on the dashboard camera?
beating a motorcyclist