An army captain who was not authorized to be quoted by name said military and civilian authorities are still looking for the chopper, a day after it was reported missing.
The officer had no further information on how many people were aboard the craft, or where it was when it was last heard from.
Search efforts continued in the remote mountain village of La Pintada, north of Acapulco, where 68 people were reported missing following Monday's landslide. Two bodies have been recovered.
Survivors of the landslide at a shelter in Acapulco recounted that Monday was a holiday, and rain fell all day because of the tropical storm off the coast, so far more people than usual stayed home, napping under warm blankets or cooking for the Independence Day celebration in La Pintada's little cobblestone square.
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Suddenly, the earth trembled, and a tidal wave of dirt, rocks and trees exploded off the hill above the village, sweeping through the center of town, burying families in their homes and sweeping wooden houses into the bed of the swollen river that winds past La Pintada on its way to the Pacific.
Manuel later gained hurricane force and rolled into the northern state of Sinaloa yesterday morning before weakening over land. By last night it had degenerated into an area of low pressure over the western Sierra Madre mountains, the US National Hurricane Center said.
Three people were reported dead in Sinaloa: a fisherman swept from his boat, a small boy who fell into a ditch and a young man whose vehicle was swept away in a rain-swollen stream.