New Delhi/Mumbai, Aug 1 - Former home minister Buta Singh insisted Saturday that his son, arrested on bribery charges, was innocent even as detectives seized three unlicensed pistols during a search of his son's residence.

Looking haggard at a press conference in New Delhi, Buta Singh declared he was ready to be questioned by the Central Bureau of Investigation (CBI) over charges that he knew about his son Sarabjot Singh's activities. He said he also planned to move the court to prove his son's innocence.

'By all means, yes,' Buta Singh said when reporters asked him if he still felt that his son Sarabjot alias Sweety Singh had done no wrong. Sweety Singh was arrested Friday on charges that he took the first lot of a Rs.3 crore (Rs.30 million) bribe from a contractor to have a case against him withdrawn by the National Commission for Scheduled Castes/Scheduled Tribes that Buta Singh heads.

A CBI official in Mumbai said Buta Singh, a member of the Congress party, would be questioned in connection with the corruption charges against his son, who has reportedly confessed entering into a bribe deal.

'We shall question Buta Singh and all other people whose names figure in the complaint,' the official said on condition of anonymity. Sweety Singh had reportedly said that his father was aware of his bribe taking.

Sweety Singh was remanded to police custody by a Mumbai court till Aug 5 after he was caught allegedly taking a bribe of Rs.10 million from Nashik-based Ramraj Patil, a contractor accused of not paying his Dalit workers.

On Saturday, CBI officers searched the south Delhi residence of Sweety Singh and seized three unlicensed pistols and 38 cartridges, an official said while seeking anonymity.

A case under the Arms Act was registered against Sweety Singh at the Nizamuddin police station.