Lesbian couple shot in the US

A Texas teen has been killed and her girlfriend seriously injured after they were shot at close range over the weekend.

Mollie Judith Olgin died from a gunshot wound to the neck and Mary Christine Chapa is in a serious condition after they were found in a park in Portland.

Police are hoping Chapa will be able to identify the unknown attacker and assist in their understanding of the motive.

"This particular case, it does have some of the earmarks of a targeted attack," Portland Police Chief Randy Wright said.

"There's no evidence to suggest that this crime was committed as a bias against the girls or their lifestyle.”

"There are certain details we will not release at this time due to the scope of the investigation, but we do have numerous witnesses we are in the process of interviewing, and there is physical and forensic evidence that is being looked at as well, including lab work that needs to be done.”

Wright said Chapa is able to communicate but the police have not yet been able to talk to her.

Whilst the investigation continues a makeshift vigil has been set up for the couple where they were found and Olgin’s family have since announced a memorial service.

"Mollie touched the lives of everyone and will always be remembered for her intelligence, beauty, compassion, humour and her kind heart," Olgin’s family said in an obituary.