Police are looking for the owner of a dog that attacked and killed a smaller dog in Dartmouth this week.

The dogfight happened Monday evening on Dorothea Drive, near Eric Graves Memorial Junior High School.

Police said a woman was walking a Jack Russell terrier when three people approached with their two dogs.

One of the two dogs was not on a leash, police said, and the one that was running free attacked the terrier.

The terrier was so badly injured that it had to be put down.

Police said the aggressor was a red short-haired dog that looked like a pit bull.

Const. Brian Palmeter, spokesman for Halifax Regional Police, said the owner of that animal could face charges for having a pet off-leash.

Police were looking for a woman and two men on Tuesday.

The woman is described as being about 25, with shoulder-length blonde hair and wearing glasses.

The two men with her are believed to be in their mid to late 20s. One had short dark hair and was wearing a white T-shirt and black baseball cap. He had tattoos on his right arm.

The second man had dark curly hair.

Police said anyone with information should call animal services at 490-4000.

Last month, a Shih Tzu died after it was attacked on Spring Avenue in Dartmouth. Two dogs were seized and their owner was charged.