"If his body is not given to us or his family, we will, God willing, carry on his mission," Pakistani Taliban spokesman Ahsanullah Ahsan Ahsan told The Associated Press news agency by telephone. "We will take revenge for his murder."
Indian External Affairs Minister Salman Khurshid has said the government would consider any request from the Pakistani government or Kasab's family to hand over his body, but no such request had been received.
Kasab was the lone surviving gunman from the three-day attack in Mumbai, India's financial capital, which targeted two luxury hotels, a Jewish centre, a tourist restaurant and a crowded train station. The nine other gunmen were killed during the siege.