LUCKNOW, Sept. 10 -- Police on Tuesday arrested four men in connection with the August 31 explosion at an illegal fireworks factory in Behta near here. Each of them was carrying a cash reward of Rs.25,000. The incident left four people dead and several others injured. Police said the four men arrested on Tuesday were part of a group that was illegally manufacturing and storing explosives in the residential areas of Behta. "The arrested men were identified as Shanu alias Shoaib, 24; Mohammad Waris alias Sheru, 40; Ali Akbar, 47 and Mohammad Afzal, 26. All of them hail from Behta and were caught near Maurya Bhatta during a raid," said Gudamba station house officer Prabhatesh Srivastava. Earlier, three co-accused, Tinu alias Ali Ahmed, Mohammad Naseem and Mohammad Yakub alias Ghaplu, were arrested and sent to judicial custody. Police said they had been operating an illegal fireworks unit in Behta, where explosives were manufactured and stored in violation of the Explosives Act. The explosion on August 31 ripped through the house where the illegal unit was functioning. Rescue teams pulled out seven people from the debris, but four succumbed to injuries. Two more explosions were reported over the next couple of days but there were no injuries. htc...