PESHAWAR At least 22 persons including a former MNA Maulana Noor Muhammad were killed and 35 others got injured when a suicide bomber blew himself up at a mosque in Wana, South Waziristan Agency, on Monday. According to eyewitnesses, MNA Maulana Noor Mohammed was delivering a sermon at the mosque after Zohr prayers when the bomber detonated himself killing 22 persons including the MNA and injuring 35 others. The injured were rushed to a nearby hospital, where several injured are stated in critical condition and were later shifted to District Headquarters Hospital Dera Ismail Khan. Soon after the blast, the law enforcement agencies personnel rushed to the mosque and cordoned off the area. The mosque was also badly damaged in the blast. The deceased MNA was the head of Ittehad-e-Ulema-e-FATA and was running a seminary. He had been associated with JUI-F, but later he left the party after emerging differences with its top leadership. Confirming the blast a suicide attack, sources said that apparently the prominent religious leader was the main target. Maulana Noor was an influential figure who had several times acted as a negotiator between the Taliban and the government. So far no militant group has claimed responsibility of the blast. Agencies add: It was the first significant suicide attack since August 4 and comes with the country battling to cope with the fallout of devastating floods that have affected up to a fifth of the country and hit 20 million people. A health official in a paramilitary hospital in Wana said condition of most of the wounded was critical. We have received 14 injured but there condition was very critical, the official told AFP requesting anonymity.