Lashkar-e-Taiba terrorist Razaullah Nizamani Khalid alias Abu Saifullah Khalid, who was the brain behind the 2006 attack on the RSS headquarters, was killed by three unidentified gunmen in Sindh province of Pakistan on Sunday, officials said.

Khalid used to head the terror operations of Lashkar-e-Taiba (LeT) from Nepal in early 2000 and had many aliases including Vinode Kumar, Mohammed Salim and Razaullah. He was involved in multiple terror strikes in India, they said.