An ex-serviceman allegedly shot dead a person residing in a rented house on Handhiaya road here last night. The deceased, Ranjit Singh, was 42.Devinder Singh, Station House officer (SHO), city police station, Barnala, today said that Ranjit had been shot dead by accused Gurjit Singh as he had been beaten up by Ranjit following some altercation.He said the police had registered a case under Section 302 of the IPC and Sections 25, 27, 54, 59 of the Arms Act against Gurjit. The police have arrested Gurjit and also seized the gun and cartridges from him, he added.