MUMBAI, Dec. 3  -- The terrorists who attacked Mumbai, India, last week spent the past three months in Pakistan planning their strike, an Indian police official said Wednesday.

Mumbai Joint Police Commissioner of Crime Rakesh Maria, who is leading the investigation, said he learned the information with the only know surviving attacker, CNN reported.

The suspect is Mohammed Ajmal Qasab, 21, from Pakistan's Punjab province. He is alleged to have spent the past 18 months training at camps run by the Pakistani terror group Lashkar-e-Toiba.

ABC News reported that Qasab's family was promised almost $4,000 if his attack succeeded.

"We were told that our big brother India is so rich and we are dying of poverty and hunger. My father sells (lentil dumplings) on a stall in Lahore and we did not even get enough food to eat from his earnings," Qasab said.

Maria also said all 10 attackers were Pakistanis, something that Pakistani officials have said is untrue.

Most of the 179 deaths in the attacks occurred at the city's top hotels, the Oberoi and the Taj Mahal. (UPI)