ISLAMABAD - Pakistani Taliban led by South Waziristan based Baitullah Mehsud is no more a solidly unified entity as fissures and cracks are emerging in its ranks and files. Tehrik-e-Taliban Pakistan (TTP) of Baitullah Mehsud has not responded strongly to the ongoing military operation in Swat as a united organisation and whatever resistance that army is facing on the ground is by Swati Taliban, foreign fighters and some splinter Jihadi groups, an official with knowledge of ongoing developments in Swat said on Tuesday desiring not to be named. He said that not only the TTP was experiencing differences in its ranks but its leader was also facing another serious problem with a tribal commander Qari Zainuddin challenging his absolute writ in the Mehsud area of South Waziristan. Qari Zainuddin had emerged as a strong militant leader and had been able to exhibit his prowess well by carrying out some successful attacks against the followers of Baitullah in his own domain, he said. According to official, Taliban from tribal areas did go to Swat to help the Swati Taliban but that was much out of their own desire than something organized from the platform of TTP. He said the Taliban decision to engage no more in fighting with the army in Mingora, as was announced by their spokesman in Swat Muslim Khan, also reflected their weakness in face of the strong military offensive. With little external help from the rest of the TTP, perhaps, the Swati Taliban have decided to save their strength, retreat, regroup and wait to reappear after the end of current testing time, the official said. Another official here when contacted expressed his ignorance about any intelligence information received in Islamabad that showed divisions in the files of TTP. However, he said that fewer suicide attacks in the wake of Swat operation unlike their response to the past offensives reflected that Taliban had weakened and so was their ability to retaliate strongly as they did in the past.