Pahalgam, May 22 -- A month after 25 tourists and a local ponywallah were killed by terrorists in Pahalgam, the perpetrators are still at large despite the massive crackdown launched by security forces across theKashmirvalley to track them down.

While several top terrorists have been killed in various operations launched after the deadly April 22 attack at Baisaran meadows, the terrorists who carried out the massacre have eluded the security forces, officials said on Thursday.

The National Investigation Agency (NIA), which took over investigation in the case, has questioned more than 100 suspects who might have been directly or indirectly involved in the massacre.

Among those questioned are people who used to provide various services - f...