Asif Ali Zardari, the former president, was brought to a hospital after feeling uneasy.
Bilawal Bhutto-Zardari coprime minister of the PPP has arrived from Islamabad in Karachi while her husband and Bakhtawar Bhutto-Zardari have also arrived in Dubai from where she would be present.
The PPP leader and ex-president were hospitalized at a hospital in October last year because of its low sugar content.
During a recent address to the National Assembly, Bilawal said that despite being ill, Zardari had attended a budget session.
From Lahore and Islamabad, the former president landed in Karachi yesterday. He recently met with Pervaiz Elahi, the former Punjab chief minister, in Lahore.
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