Three suspected Babbar Khalsa terrorists were arrested in north-west Delhi early Monday morning, police sources said.
Paramjit Singh, a close associate of Babbar Khalsa international chief Jagtar Singh Hawara, and his accomplices Jasbir and Bhupender, were arrested from Nanglipura area around 6 am, they said.
Four kg RDX, detonators and a pistol were recovered from them, they added.
Paramjit is suspected to have played a role in the assassination of former Punjab chief minister Beant Singh.