WASHINGTON: President Barack Obama has spoken to Prime Minister Sushil Koirala of Nepal to express sympathy over the thousands of deaths and vast destruction caused by a massive earthquake on Saturday and pledged to offer further assistance.

White House spokesman Josh Earnest says the two men discussed U.S. military and civilian efforts already underway to help Nepal and international aid groups in their emergency rescue and response.

Police in Nepal say the death toll from the 7.8 magnitude earthquake has topped 5,000. They discussed the ongoing efforts by U.S. civilian and military personnel to assist the government of Nepal and international organizations in the disaster response efforts, including provision of rescue and logistics support.