Faryal Talpur (centre) arrives to appear in a court in Karachi. File / AP
Earlier this week, Zardari was also apprehended by the NAB in the same case.
A five-member NAB team including female investigators visited the Zardari House in Islamabad, which was notified as a sub-jail by the NAB chairman "for the purposes of detention of accused,” according to a notification issued by the accountability watchdog.
Zardari was arrested on Monday after cancellation of his pre-arrest bail by the Islamabad High Court (IHC) in the fake bank accounts case, prompting a strong reaction from the opposition and sporadic protests by PPP workers in various parts of the country, mostly in Sindh.
The NAB said the grounds for arresting Zardari included whitening ill-gotten money through fake accounts, acquiring stakes in Summit Bank through fraudulent means, using Omni Group as a hedge between himself and fake accounts, receiving millions of rupees from two fake accounts, and getting unauthorised payments released for construction of a Karachi plot.
Zardari is currently on physical remand in NAB custody. NAB investigators and after their questioning of Zardari, and concluded that Talpur's arrest was "unavoidable".
Talpur will be produced before an accountability court on Saturday to seek her physical remand.
An NAB spokesman said Faryal Talpur had been ordered to remain in her house. He said she would be attended by female police officers and her treatment should not be described as an arrest.
The government has denied any role in the arrest of Zardari and says the NAB operates independently. But the crackdown has prompted an angry response from PPP officials, including Zardari's son, Bilawal Bhutto Zardari.
"We will have to go out into the streets and show people how their rights are being taken away," Bhutto Zardari told a hastily called news conference. "We can see in these days that the rule of law is not being applied."
As well as Zardari, former prime minister Nawaz Sharif is also in jail on corruption charges.
Tariq Butt / Reuters
The decision paves the way for the country's anti-graft body to arrest the two, perhaps within hours.
Polling was held for the first time in Pakistan’s tribal areas, now merged in Khyber Pakhtunkhwa (KP), to elect 16 members of this provincial assembly on Saturday.
'Time for nation to stop glorifying money launderers who have damaged our nation & impoverished our people and now seeking refuge behind 'democracy.'
The federal cabinet has decided to block media coverage and interviews of politicians who are convicts or under-trail prisoners and directed the Pakistan Electronic Media Regulatory Authority (Pemra) to fulfill its "responsibility” to discourage airing of such programmes by the electronic media.
If the blockage goes on until the afternoon, operations will come to a complete halt, the sources said. The port was previously blocked from Oct. 29 to Nov. 9 with a brief resumption of operations between Nov. 7-9.
Voters in the Marshall Islands went to the polls on Monday in a general election that will determine who will lead the Pacific island country's negotiations with the United States
Others were taken to Community Regional Medical Center in critical condition, and some are in critical but stable condition, the TV stations reported.