ROUGH CUT (NO REPORTER NARRATION) Six people were killed and at least 20 were buried under rubble when a large blast destroyed the home of one of Pakistan's provincial ministers on Sunday (Sunday 16), rescue officials said. Police said the blast appeared to be a large bomb, and it had caused the roof to cave in as the home minister of Punjab province, Shuja Khanzada, held meetings with supporters in his hometown of Attock in northern Pakistan. Punjab, Pakistan's biggest and wealthiest province, is the political heartland of Prime Minister Nawaz Sharif. District information officer Shahzad Niaz told Reuters there were "between 20 and 30 people present" when the blast happened. Rescue workers at the scene said six bodies had been recovered so far. Local television pictures showed rescue work underway at the collapsed house and local residents helping. There was no immediate claim of responsibility.