To an American woman's horror, a tiger bit and injured her after she allegedly broke in to a Nebraska zoo on Halloween night.

She was attacked by a three-legged Malayan tiger named Mai at Omaha's Henry Doorly Zoo and Aquarium, zoo officials said in a statement.

The woman, identified by police as Jacqueline Eide, 33, trespassed on zoo property after hours, along with a friend, who took her to Creighton University Medical Center after the incident.

Eide appeared drunk and had an injury to her left hand, the Ohama Police Department said, and was aggressive toward the medical staff.

According to police, Eide had broken in to the zoo to pat the tiger. "When she reached into the cage she was bitten, causing severe trauma to her hand," the police said. "She was aggressive toward staff and showed signs of intoxication of alcohol and/or drugs."

The Telegraph reported that Eide could lose parts of her fingers and faced charges of criminal trespass. It said that 18-year-old Mai, who had been at the zoo since 2003, lost a leg in a snare trap when she was a cub and was described as very friendly and trusting.

The zoo authority has expressed concern over the safety of animals as well as visitors following the incident.

"The safety and security of our guests and animals are always a priority at Omaha's Henry Doorly Zoo and Aquarium," said Dennis Pate, the zoo's executive director.

"We will continue to keep security a top priority for zoo guests and animals."