A monster dad strangled his two young children before hiding their bodies along with that of their pregnant mother in crude oil tanks.

Lawyers for Christopher Lee Watts, 33, filed a motion on Friday in Weld County, Colorado, asking for DNA to be taken from the necks of the little girls’ bodies, and it strongly suggested they were strangled.

There has been no official cause of death announced in the case, after the bodies of Shanann Watts, 34, and the couple’s two daughters, four-year-old Bella and three-year-old Celeste, were recovered on Thursday from the crude oil field where Christopher worked.

Christopher, 33, is being held without bail and faces three counts of first-degree murder and three counts of evidence tampering.

Before his arrest, Chris appeared on NBC’s Today show where he said he had ‘like no idea’ where the family went.

Watts is seen in court on Thursday.

He is being held without bail, and prosecutors are believed to be weighing whether to pursue the death penalty inthe case, a rarity in Colorado.

The couple’s home, where police say the murders were committed, is seen on Friday.

Instead of a gender reveal party, the home is now a somber site of mourning, with even strangers visiting to pay tribute to the slain mother and children.

The family is seen leaving Colorado for a trip to North Carolina in late June.