AN illegal immigrant allegedly went on a bloody rampage that left two women dead.

Rony Yahir Alvarenga Rivera, 22, is accused of savagely attacking and killing a 32-year-old woman at their home in Valley Stream on Long Island, New York around 9pm on Thursday.

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Rony Yahir Alvarenga Rivera, 22, has been arrested on multiple murder charges after two women were found deadCredit: CBS
 

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Rivera allegedly lay in wait at a Wendy’s before killing his coworker hours after stabbing his roommate to deathCredit: CBS
His connection to the woman is not entirely clear but police said he was living with her.

Hours later, police say he then went to a Wendy’s parking lot where he lay in wait and killed his co-worker as she took out the trash.

Rivera allegedly stabbed his 42-year-old colleague to death in the Island Park Wendy’s parking lot in the early hours of Friday morning.

Rivera, who came from El Salvador and arrived in the US illegally at the age of 12 in 2016, allegedly stabbed both women multiple times in the neck and torso in the frenzied attacks.

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He told police “I’ve killed someone,” in a chilling phone call he allegedly made after the Wendy’s murder.

“While we were at the scene, we received information that an individual was stopped at 169 Atlantic Avenue in Lynbrook,” Det. Lt. George Darienzo said.

“He asked to see police and when police arrived, he said he killed somebody that night,” he added.

“A short conversation ensued, and an arrest was made. At that same time, information was received that this individual may be responsible for a second murder.”

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Rivera has pleaded not guilty to the charges against himCredit: Nassau County Police Department
Rivera is now facing multiple murder charges and has pleaded not guilty.

While a motive has not been released, Nassau County police have summarised his mental state as angry.

“For him to go out of his way to kill his roommate down the street and then go all the way to a Wendy’s that he worked at to kill his coworker. He must have had something against them real bad,” one resident told WABC.

The names of the victims have not yet publicly been released.