'Devastation' after mosque bombing in Aleppo, activists say NEW: Nour Al-Shuhada mosque was struck during the third prayer time of the day He is pushing for a cease-fire in Syria for the Muslim holiday of Eid al-Adha Beirut, Lebanon (CNN) -- Syria army planes pounded a mosque in Aleppo Wednesday and left the site in ruins, activists said. Tama Hazem, head of the Aleppo Media Center, said Nour Al-Shuhada mosque was struck during Asr, the third Islamic prayer of the day. He reported deaths and injuries. The scene was of complete devastation. The main hall of the mosque and the minaret were destroyed and many of the wounded were in critical condition," Hazem said. There was no reason to target this mosque and it is not the first one to be targeted in the neighborhood. There is no FSA base in the mosque and it was not frequented by rebels," he said, referring to the rebel Free Syrian Army. The opposition Local Coordination Committees also said warplanes dropped TNT barrels on the mosque in the neighborhood of Shaar. The LCC said government forces shelled more than two dozen areas and dropped bombs on five others across the country. At least 70 people died on Wednesday, including 21 in the Damascus suburbs and 20 in Idlib. Rebels fighting regime forces in Idlib province "inflicted heavy losses" and downed a helicopter, the LCC said. The state-run Syrian Arab News Agency said its forces killed many "terrorists" across the country. It reported the assassination of a Damascus province official. Mohammad Ayman Taja was shot dead as he was leaving his house in the Rukn Eddin area of Damascus city. Brahimi visits Lebanon on cease-fire mission Scrambling to find a solution to Syria's bloody civil war, international envoy Lakhdar Brahimi visited Lebanon and campaigned a cease-fire in Syria. Later Wednesday, Brahimi was expected to visit the Syrian capital of Damascus. "People bury one hundred persons a day, and if this number is reduced during Eid, it may be a start to bring Syria out of this dangerous situation that is has slipped and continues to slip into," Brahimi said, as reported by the Lebanese National News Agency. The U.S. election and the price of sitting out Syria. Stop arming Syrians, Brahimi tells world Brahimi backed U.N. Secretary-General Ban Ki-moon call for countries to stop arming the different sides. "God willing, this would be a start to get out of the Syrian crisis, and of course this won't be easy," he said to the Lebanese news outlet. These countries should know that this crisis won't be confined within the Syrian borders forever. If it not resolved it will deteriorate  There is mounting concern over a foreign presence in Syria, such as Hezbollah and Iranians fighting for the al-Assad regime. CNN has learned that British authorities think dozens of British citizens have gone to Syria, some of whose motivation is to wage jihad. Not all of them are planning to join the Free Syrian Army, which is becoming increasingly hostile to the jihadist elements fighting al-Assad's army. There are concerns that jihadists are getting battlefield training and experience in Syria that they could bring back and use on targets in Great Britain. CNN's Nada Husseini, Yousuf Basil, Jonathan Wald, Salma Abdelaziz and Joe Sterling contributed to this report.