Tensions in Haiti were rising on Saturday over a lack of aid to remote areas of the impoverished Caribbean country hardest hit by last week’s devastating earthquake that killed more than 2,000 people. Many Haitians whose homes and livelihoods were destroyed by the magnitude 7.2 quake that struck on Aug. 14 said they were unsure how to even start rebuilding. Exasperation over the time it is taking for aid to come through began to boil over on Friday, with residents attacking aid trucks in several towns across the south of the nation. A confrontation also erupted after former President Michel Martelly visited a local hospital in the city of Les Cayes, where one of his staff left behind an envelope of money that set of a violent scramble. “We are concerned about the deteriorating security situation that may disrupt our assistance to vulnerable Haitians. We are talking to the authorities and all actors to try and prevent this,” said Pierre Honnorat, head of the U.N. World Food Program in Haiti. The official death toll from the earthquake stands at 2,189 people, with an estimated 332 people still missing. Residents in towns across the southern rural countryside are still digging for bodies believed to lie underneath the rubble. Tens of thousands of homes are in ruins, leaving many families with no option but to sleep outside despite torrential downpours at night. The hurricane season in the Caribbean runs until the end of November, and Prime Minister Ariel Henry has warned residents to brace for more storms. U.S. Defense Secretary Lloyd Austin said on Twitter that the USS Arlington naval vessel was heading to Haiti carrying helicopters, a surgical team and a landing craft to assist in the relief effort. Several countries, including the United States, have already dispatched aid and rescue teams. The U.N. children’s agency, UNICEF, said its first shipment of 9.7 tons of medical and water and hygiene supplies arrived in the capital Port-au-Prince on Friday, and a further 30 tons of supplies are expected to land in the coming days.