Upper House lawmaker Masakuni Murakami, who is suspected of receiving financial benefits from KSD, a scandal-tainted industrial insurer, may have urged fellow members of the Liberal Democratic Party to promote a KSD project during sessions of the Diet, according to informed sources.

The Tokyo District Public Prosecutor's Office is looking into possible link between Murakami's actions and any benefits from KSD, the sources said.

The pressuring of Diet members to ask specific questions means Murakami exercised his official powers as a Diet member, and money specifically provided as reward for such actions can be considered bribery.