The body of Khalid Bashir, who was associated with JuD's information wing, was found in Sheikhupura, 40 km from Lahore, yesterday. He was in his forties.
JuD spokesman Yahya Mujahid claimed unidentified men kidnapped Bashir while he was on his way to the group's office at Chauburji.
He said the kidnappers had not demanded any ransom.
"On Friday, Bashir's body was found in a canal in Sheikhupura with multiple wounds, including gunshot wounds," Mujahid said.
JuD chief Hafiz Saeed demanded the arrest of the killers.