Security forces in Pakistan's restive North West Frontier Province are in the final stages of preparing for a major push against the pro-Taliban militants led by Maulana Fazlullah who have seized several key towns in the province.

Security experts have pointed out that the capture of several towns in Swat in the NWFP reflects how the militants have penetrated deeper into Pakistan from their strongholds in tribal areas bordering Afghanistan, described by the US as a "safe haven" for al Qaeda and Taliban elements.

The government rushed over 2,500 paramilitary forces to Swat last month to quell the activities of the 34-year-old Fazlullah and his armed Shaheen Commando Force.

"Heavy weapons are being taken to the hilltops... the government is likely to react as the Maulana does not understand the language of talks," an unnamed senior official was quoted as saying by the Daily Times newspaper on Thursday.

Security forces are reinforcing their positions at the Fizaghat and Ghalkedro hilltops in preparation for a major push against the forces of Maulana Fazlullah, witnesses and officials said.

Pro-Taliban militants have strengthened their hold on the Swat valley in northwestern Pakistan by seizing several key towns after outnumbered security forces laid down their arms and fled their posts.

Militants are now controlling key towns like Matta, Khwazakhela, Madyan and Charbagh, all located near Imamdheri, the stronghold of radical cleric Maulana Fazlullah.

President Pervez Musharraf [Images] cited the growing threat from militants as one of the main reasons behind his decision to impose Emergency on November 3.

Fazlullah, known as "Mullah Radio" for his calls for jehad broadcast from an illegal FM station, is moving around Swat like "a ruler with full protocol," reports have said.