Islamabad, Aug 18 - Pakistani security forces have arrested Moulvi Omar, a senior aide to Baituallah Mehsud, the chief of the Pakistani Taliban who is believed to have been killed in a US drone attack earlier this month.

Quoting official and intelligence sources, Online news agency reported that Omar, who carried a bounty of Rs.10 million, was arrested from a village in the Mohmand agency along the Afghan border Monday night as he was travelling in a car with two of his associates, including Waheed Gull and Hameed Gull.

Tribal elders assisted the Frontier Constabulary (FC) in locating Omar, who was in the limelight as the spokesperson for the banned Tehreek-e-Taliban Pakistan (TTP), telephoning journalists to claim responsibility for dozens of terrorist attacks inside Pakistan.

The FC, while confirming Omar's arrest, said it had begun a major operation against the Taliban in the Mohmand agency.

Military sources also claimed to have arrested Omar, saying he had been shifted to an undisclosed location for interrogation.