A 17-year-old has been arrested on suspicion of assaulting a police officer outside a bar.
Officers were called after a fight outside Moo Bar in Russell Street, Leamington Spa, on Wednesday night.
A Taser stun gun was used to assist in the arrest of the youth, who was also held on suspicion of violent disorder and resisting arrest.
Another 17-year-old youth and a 24-year-old man were arrested on suspicion of affray.
Warwickshire Police said the incident happened at about 2300 GMT outside the bar and involved 10 to 15 people.
Officers were checking CCTV footage and have appealed for anyone with information about the incident to contact the force.