Mumbai, May 2 -- A 23-year-old man, who was among the four accused arrested in connection with the firing incident outside actor Salman Khan's residence, was found dead inside the lock-up of the Mumbai Police headquarters, in a suspected case of suicide, police said on Wednesday. According to the police, the incident took place between 12.30pm and 1pm in the toilet of the first-floor lock-up located in the crime branch's building in south Mumbai....