Dadar resident Alvin DSa,arrested by the Uttar Pradesh Anti Terrorism Squad (ATS),was involved in the illegal arms racket for two years,police said Wednesday.
Mumbai police is investigating the case separately,said Deputy Commissioner of Police Dhananjay Kulkarni,zone 5.
Alvin (80),a retired flight engineer with Air India,was picked up for questioning Tuesday in a joint operation of the UP ATS,the Maharashtra ATS and Dadar police.
Police raided his residence in Salvation Colony and found magazines,live cartridges and spare parts for guns.
A detailed search of Alvins residence also revealed detailed and up-to-date literature about firearms. It deals mainly with assembling and maintenance of firearms as well as the functions of gun parts.
Alvin has been doing this for around two years now, said Kulkarni.
Police will now question DSas wife as well as their son,who studies in Canada and is expected to be back in Mumbai soon.
Sources said Maharashtra ATS was also looking into the case.
DSas name cropped up in the interrogation of one Mohammed Khalid,who was arrested by UP ATS for allegedly supplying illegal firearms in various states earlier this month,police said.
Khalid was allegedly recruited into the racket by Mumbai-based criminal Shivanandhan Shetty,currently lodged in a UP jail.