The search was among the raids carried out at multiple locations across the country, including at the homes of the former finance minister and his son, CBI sources said.
A team of CBI sleuths are conducting searches at Peter's bungalow in the posh Worli area in south Mumbai, agency sources said.
Both Peter and his wife Indrani Mukerjea, founders of INX Media, are accused in the sensational Sheena Bora murder case and are lodged in jail here.
P Chidambaram has been named in a police complaint in the INX deal, which accuses his son Karti of receiving 'consultation charges' after the INX Media won government approval to receive foreign investments.
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The agency had yesterday registered a case regarding alleged irregularities in granting the Foreign Investment Promotion Board (FIPB) clearance to INX Media in 2007 when Chidambaram was the finance minister.
Indrani was arrested in August 2015 after chilling details of the murder of her daughter Sheena Bora came to light that year. Peter was arrested and made an accused later in November 2015.
According to CBI, which investigated the murder case and filed the chargesheet, that both Peter and Indrani had siphoned off money from INX Media.