More than 40 persons have been detained for questioning as part of a massive operation currently underway to track down the terrorists involved in the Poonch terror attack, officials said on Monday.

Additional troops have been inducted to further intensify the cordon-and-search operation (CASO) in Bhata Dhurian-Tota Gali and neighbouring areas. As the operation entered fourth day on Monday with engagement of multiple security agencies, the entire belt is put under cordon, they said.