A group of Chilean aid workers have been able to capture what is believed to be the heartbeat of a man trapped in the rubble of an explosion at an ammonium nitrate warehouse in the Lebanese capital, Beirut, on August 4.

Foreign media reported that the Chilean relief workers launched the operation from yesterday afternoon with the help of the dogs used in the rescue operation.

Relief workers are using shovels and hands to clear debris from collapsed buildings. Chilean relief teams were the first to capture this heartbeat signal on a sound wave receiver. Yesterday, it was able to pick up heart rate signals at a rate of 17-19 beats per minute, and has now dropped to 5-7 beats per minute, Chilean relief officials said.

Lebanese people have been protesting against the Lebanese army since yesterday near the site of the operation, which has hampered the implementation of their rescue operations. The August blast killed 191 people and injured more than 6,000.