POKHARA, Nepal — A plane making a 27-minute flight to a Nepal tourist town crashed into a gorge Sunday while attempting to land at a newly opened airport, killing at least 68 of the 72 people aboard. At least one witness reported hearing cries for help from within the fiery wreck, the country’s deadliest airplane accident in three decades.

Hours after dark, scores of onlookers crowded around the crash site near the airport in the resort town of Pokhara as rescue workers combed the wreckage on the edge of the cliff and in the ravine below. Officials suspended the search for the four missing people overnight and planned to resume looking Monday.

Local resident Bishnu Tiwari, who rushed to the crash site near the Seti River to help search for bodies, said the rescue efforts were hampered by thick smoke and a raging fire.