Zaki-ur Rehman Lakhvi, a key planner of the 2008 Mumbai attack, was today detained by Pakistani authorities for three more months, a day after he was granted bail by a court that caused an outrage in India.

Lakhvi, 54, was detained for three months under Maintenance of Public Order.

"Lakhvi was to be freed from Adiala Jail Rawalpindi this morning but the government detained him there for three months under the 16 MPO," Prosecution chief Chaudhry Azhar said, adding the Pakistan government had also informed India about this.

Lakhvi was granted bail by Islamabad Anti-Terrorism Court yesterday due to lack of evidence against him.

The order of detention was handed over to Adiala Jail superintendent before Lakhvi's counsel could show his bail order to jail authorities.

The prosecution chief further said that the government had decided in principle to challenge the trial court's decision in the high court.