PERTH, April 23: Two teenage girls who admitted murdering their friend told police it “felt right” to strangle her, an Australian court heard on Monday.

The 17-year-old girls, who cannot be named because of their age, were facing a sentencing hearing in Perth Children's Court after pleading guilty to murdering Eliza Davis in the small coal mining town of Collie in June.

The girls sat stony-faced in court as prosecutor Simon Stone said they had confessed that after partying with Eliza one Saturday night they decided to kill her, the national AAP news agency reported.

“Sunday morning me and (the other accused) woke up, and we were just talking, and for some reason we just decided to kill her,” one of the girls told police in her interview.

“We just did it because we felt like it, it is hard to explain,” the other girl said.

“I knew we had wanted to kill someone before. We knew it was wrong, but it didn't feel wrong at all, it just felt right.” One of them sneaked up behind Eliza as she was reading, wrapped speaker wire around her throat and tightened it as the other held her down, trying to press a chemical-soaked cloth into her mouth.

“She started not being able to get her breath, and we just kept going,” one of the girls told police.

“She was just yelling at us ‘What the ..., what are you doing’ .. 'Oh you freaks, what's wrong with you psychos.” One of the girls told police: “As our friend, we did not really want her to suffer.” The girls regretted the fuss the killing caused but neither felt remorse for their dead friend, Stone said.

“If she had died another way it probably would have bothered me ... but it just did not,” one girl said.

The girls reported Eliza missing after they buried her and pretended to help her family look for the dead girl.

They turned themselves in several days later, walking into separate police stations and directing authorities to where they buried her body.

Stone told the court the girls had no remorse and were holding back on the reason behind their cold-blooded, premeditated, sadistic killing.—AFP