ISLAMABAD, Sept 7: Two persons were taken into custody by the capital police and an intelligence agency on the suspicion of their links with a terrorist organisation on Saturday, sources in the police told Dawn.

The arrests were made during a raid on a house at Khayaban-i-Kashmir in G-15 sector by a joint team of the police and the intelligence agency.

The police announced that they would share the details of the raid with the media at a news conference but later cancelled it for unknown reasons.

The sources said during the raid, 5.5 kilogrammes of explosives, 16 detonators, 10 hand grenades, four remote-controlled toy planes, spying gadgets, four 222-bore guns, two 9mm pistols and two Kalashnikovs were also recovered from the house.

The Tarnol police produced one of the arrested suspects, a cousin of the house owner, before a court.

The court gave him in police custody on a physical remand.

The police officially did not share any detail about the development with the media. However, a police official told Dawn that the matter was being investigated, adding the main suspect was not in the police custody.

The sources said it was suspected that the two men had links with Al Qaeda and Tehrik-i-Taliban Pakistan (TPP).

It has been revealed that the suspects had planned to fill the remote-controlled toy planes with half a kilogramme explosives each and use them to target three to four important installations outside the red zone in Islamabad, the sources said.

After engaging the law enforcement agencies in the buildings, the terrorists would carry out a massive attack inside the high security zone, they added.

The suspects had filled the four toy planes with explosives which were defused by the police bomb disposal squad.

The sources said the planes could carry up to one kilogramme explosives each and could be sent up to a considerable height. Besides, it can also be handled from a long distance.

When the raid was conducted at the house, there were also some women but after the raid they disappeared. They police took into their custody only one of the suspects.

On August 31, the capital police had tracked down an explosive-laden car which they had been hunting since Eidul Fitr.

The recovery had been made from the house of a senior police officer’s brother early in the morning.

The bomb disposal squad had found a large quantity of explosives along with four detonators, which were disconnected after several hours.

According to a police official, the explosives weighed almost 175kg and contained ball bearings. A laptop had also been recovered from the car and sent to the cyber crime unit for analysis.

Similarly, another terrorist attack had been foiled on Friday, August 9, 2013 when a suicide bomber was gunned down near a Shia mosque in the federal capital.

The suspected bomber had attempted to enter an Imambargah in Bara Kahu, but had been shot dead by the security guards.