Brijesh Nishaad, 18, wears bandages on his face after he was allegedly injured by an unidentified flying object while sleeping outdoors in Allahabad, India, Saturday. Photo: Rajesh Kumar Singh/AP

Shanwa, India — It comes in the night, a flying sphere emitting red and blue lights that attacks villagers in this poor region, extensively burning those victims it does not kill.

At least that's what panic-stricken villagers say. At least seven people have died of unexplained injuries in the past week in Uttar Pradesh state.

"A mysterious flying object attacked him in the night," Raghuraj Pal said of his neighbour, Ramji Pal, who died recently in Shanwa. "His stomach was ripped open. He died two days later."

Many others have suffered scratches and surface wounds, which they say were inflicted while they slept. In the village of Darra, 53-year-old Kalawati said she was attacked last week and displayed blisters on her blackened forearms.

"It was like a big soccer ball with sparkling lights," said Kalawati, who uses only one name. "It burned my skin."

"I can't sleep because of pain," she said.

Doctors dismiss the stories as mass hysteria.

"More often than not the victims have unconsciously inflicted the symptoms themselves," said Narrotam Lal, a doctor at King George's Medical College in Lucknow, the state capital.

The police have another explanation: bugs.

"It is a three-and-a-half-inch-long winged insect" that leaves rashes and superficial wounds, Kavindra Singh, a superintendent of police, told the Press Trust of India news agency.

Police drew this conclusion after residents of one village found insects they had never seen before.

Villagers are unconvinced. In the most affected area, the Mirzapur district, 600 kilometres southeast of New Delhi, people have stopped sleeping outdoors despite the sweltering heat and frequent power outages.

Villagers also have formed protection squads that patrol Shanwa, beating drums and shouting slogans such as, "Everyone alert. Attackers beware."

Some accuse district officials of inaction and failing to capture the "aliens." One person died Thursday in nearby Sitapur when police fired shots to disperse a 10,000-strong crowd demanding that authorities capture the mysterious attackers.

"People just block the roads and attack the police for inaction each time there's a death or injury," said Amrit Abhijat, Mirzapur's district magistrate, who claims he has captured the UFO on film.