New Delhi, Jan. 22 -- Police on Wednesday arrested another man in connection with the contract killing of 44-year-old Rachna Yadav, an Aam Aadmi Party (AAP) worker and residents' welfare association member in Shalimar Bagh.

The accused, identified only as Sunny, 26, a resident of Bal Jattan village in Panipat, "actively participated" in the conspiracy by accompanying the hitman during reconnaissance on January 1 and later transporting another suspect from Rohini to Panipat after Yadav was shot dead near her home on January 10, police said.

Sunny worked at the Panipat Refinery Complex along with Sumit Kumar, 23, who was arrested on Monday for allegedly accompanying the hitman, Nikhil Chawla, on a stolen motorcycle during the killing. Sun...