Delhi police commissioner BS Bassi roped in the cyber crime cell on Sunday to probe Rashtrapati Bhavan"™s complaint against former IPL Commissioner Lalit Modi for posting"defamatory" tweets against President Pranab Mukherjee and his secretary Omita Paul.

Sources told HT that Bassi wanted the cyber cell to get the complaint examined by its legal experts to determine the sections of the penal code that could be invoked against Modi. Delhi Police has not registered a FIR so far.