Two Railway Protection Force constables have been dismissed from service in connection with the shootout allegedly carried out by their colleague Chetansinh Chaudhary onboard the Mumbai-Jaipur Express train in July last year, an official said on Sunday.

Chaudhary is accused of shooting dead his superior officer ASI Tika Ram Meena and three passengers when the train was in Palghar near Mumbai at around 5am on July 31 last year. He was held with his weapon while walking on the tracks at Mira Road after the alarm chain was pulled some time later.