The police and ambulance service were called to Spital Street near The Flying Boat pub around 6.30pm yesterday (June 9).
Paramedics treated a man before taking him to hospital with face injuries and has since been discharged.
Eyewitnesses saw officers closing the street with tape, with one suggesting forensics officers were present.
The victim told officers he had been attacked by two men inside the pub and then again outside the pub.
He alleged that before this, he had been attacked by a separate man a short walk away at the Westgate car park in Kent Road.
A South East Coast Ambulance Service spokesperson said: “SECAmb were called at approx. 18:30 yesterday (09/06/25) to reports of an assault on Spital Street in Dartford.
“Crews assessed and treated one patient at the scene before taking them to a local hospital for further medical treatment.”
A Kent Police spokesperson said: “Kent Police was called to a report that a man has been injured during a disturbance in Spital Street, Dartford, at around 6.30pm on Monday 9 June 2025.
“Officers attended the scene where the victim alleged he had been assaulted by two other men inside and then outside The Flying Boat public house.
“He also stated that, prior to this incident, he had been assaulted by another man at the Westgate car park in Kent Road.
“The victim was later treated at a local hospital for facial injuries, and has since been discharged.
“An investigation is underway and officers are urging anyone who witnessed the incidents and has not spoken to the police, to call 01474 366149, quoting reference 46/97251/25.”