Marine arrested for sexually assaulting a Las Vegas child Copyright 2019 Nexstar Broadcasting, Inc. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed. Copyright 2019 Nexstar Broadcasting, Inc. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed. Copyright 2019 Cable News Network/Turner Broadcasting System, Inc. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed. Copyright 2019 Cable News Network/Turner Broadcasting System, Inc. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed. Marine arrested for assaulting a child_20160324061511 prev next

LAS VEGAS - A U.S. Marine is accused of sexually abusing a 1-year-old girl and hurting her 4-year-old brother while he was visiting Las Vegas. Police arrested 22-year-old Alex Plunket for sexual assault against a child, lewdness with a child and child abuse.

Police say the alleged victims are his girlfriend's children.

According to police, Plunket rented a room at the Linq during his visit earlier this month and was babysitting his girlfriend's children while she went to work.

When the children's mother returned them to their father, the father noticed the children had been hurt, and the 1-year-old had a bloody diaper.

Police were called and observed the boy had a swollen lip, according to the arrest report. Police say the girl suffered more extensive injuries.

A doctor later determined the girl was the victim of definitive sexual and physical abuse, according to the arrest report.

Police say Plunket admitted the children were hurt while he babysat them, but never admitted to sexual abuse and gave other reasons why the injuries may have occurred. He blamed the boy for some of the injuries, according to police.

Metro says this abuse happened while he was visiting from Camp Pendleton, California, where he serves with the U.S. Marine Corps.

Plunket is being held at the Clark County Detention Center. He declined 8 News NOW’s request for a jailhouse interview.

A court date is scheduled Thursday.