KARACHI, Pakistan

Pakistan's anti-corruption authorities on Friday arrested the sister of the country's incarcerated former President Asif Ali Zardari in a money laundering case, an official statement said.

Faryal Talpur, a younger sister of Zardari and a member of the provincial assembly of southern Sindh province, was taken into custody by National Accountability Bureau (NAB) --- a corruption watchdog -- in capital Islamabad, in a money laundering case involving her brother and other family members.

Talpur has been kept at her Islamabad residence after the NAB, through a notification, declared her home as a sub-jail, the statement said.

Zardari, who is currently on a 10-day remand in NAB’s custody in Islamabad, was arrested earlier this week.

Zardari, the widower of slain premier Benazir Bhutto and co-chairman of center-left Pakistan People's Party, served as president from 2008-2013.

He together with other family members is accused of laundering more than 35 billion Pakistani rupees ($300 million) through fake accounts. He has denied the charges.