BRAZZAVILLE/KINSHASA - Up to 200 people were killed on Sunday when an arms dump exploded in Brazzaville, ripping apart a nearby neighborhood in the Congo Republic's capital, medical and local authorities said.Hundreds of others were injured by the blasts which rocked the riverside capital around 8 a.m. (0700 GMT), flattening houses near the scene and sending a plume of smoke high above the city.A government spokesman said that a short circuit was to blame for the fire that sparked the explosions and promised to move military barracks out of town as a result.But witnesses reported scenes of carnage on Sunday."I saw someone being carried to hospital with their intestines hanging out. They had been hit by a shell," one witness told Reuters as he was leaving the blast zone.A nearby church, packed with worshippers, collapsed, said one witness.Corpses, many burned or with missing body parts, were carried into the main city hospital morgue, said a Reuters reporter outside the building. Officials there said they had already counted 136 bodies by mid afternoon.Many more corpses littered the blast scene, said one soldier. Others are believed to be trapped under houses and other buildings that collapsed during the explosions.Weeping relatives of the dead gathered outside the main hospital to mourn while others came to look for family members who had scattered in the chaos.Congo's government, which gave a toll of 146 dead, will pay for the treatment of all the injured and look after orphans, government spokesman Bienvenu Okiemy said.Betu Bangana, an adviser in the president's office, told Reuters earlier in the day that around 200 people had been killed before later revising the estimate down to 120."Some people are still (trapped) in their houses... They're saying the entire neighborhood of Mpila has been destroyed."Panic spread to Kinshasa, 4 km (2.5 miles) across the Congo River, which separates the former French colony of Congo Republic from the larger Democratic Republic of Congo. The blast was so strong it shattered windows in the neighboring city.Both governments called for calm.Congo Republic Defense Minister Charles Zacharie Bowao quickly dismissed any talk of a coup attempt or mutiny, and told state radio the explosions were the result of a fire in the arms depot at the Regiment Blinde base near the city center.