File photo - This product image provided by Amazon shows the Amazon Echo. (AP Photo/Amazon)

A New Mexico man was arrested for allegedly beating his girlfriend and threatening to kill her — after Amazon’s Alexa called police, authorities said.

Eduardo Barros, 28, became angered with his unidentified girlfriend while housesitting in Tijeras, about 15 miles east of Albuquerque, and the dispute suddenly turned physical on July 2, authorities said.

During the assault, Barros waved a gun and threatened to kill the woman before he allegedly asked: “Did you call the sheriffs?”

The question was inadvertently picked up by the smart speaker and the voice-powered virtual assistant recognized the phrase as a command — prompting it to call 911, Bernallillo County Sheriff’s Department