Lyle Monroe Bensley, 19, is being held on a charge of burglary with intent to commit assault after the incident, which occurred early Saturday in Galveston, Texas, about 50 miles (80 km) southeast of Houston.
Wearing only boxer shorts, Bensley forced his way into the apartment of a woman he did not know and made growling and hissing noises while biting and hitting his victim in her bed, officers told the Houston Chronicle.
The woman managed to get away and call police, who found Bensley in the parking lot of the apartment complex.
“He was begging us to restrain him because he didn’t want to kill us,” Galveston Officer Daniel Erickson told the Chronicle. “He said he needed to feed.”
Bensley also told police, “I’m a vampire and I’ve been alive for over 500 years,” according to Erickson.
Emergency medical personnel said the suspect did not appear to be under the influence of drugs. Authorities accordingly placed a mental health hold on Bensley and set his bond at $40,000, the paper reported.
The woman, meanwhile, suffered minor injuries, according to KTRK-TV.