The driver of a van that killed three people in a crash near Wylie late last month is believed to have been “fatigued or asleep” at the time of the crash, according to an arrest warrant affidavit.

On March 31, Margarito Quintero-Rosales was driving a Ford E-350 van southbound on State Highway 78 when he crossed into the northbound lane, colliding with a Toyota Corolla and killing its three occupants.

“The suspect’s vehicle disregarded a no passing zone" before crossing into the northbound lane, according to the affidavit. The officer who provided an account of the events in the affidavit said he “observed no brake marks associated with either vehicle.”

Quintero-Rosales told troopers he had worked for 17 hours the day before the crash, and four more hours the day of the crash, doing roofing work on nearby homes.

Passengers in Quintero-Rosales’ van had fallen asleep while the group was driving back to Wylie, he said.

“The suspect stated that he was felt tired and fatigued before the crash,” the affidavit states. “The suspect advised that he maybe was looking out of the passenger side window or looking at the passenger prior to the crash.”

Three people died and three others were injured in a two-vehicle crash on Highway 78 near Wylie on March 31, 2016.

A volunteer Nevada, Texas firefighter, Peter Hacking, and his two children -- ages 1 and 4 -- were killed in the crash.

The three occupants of the van were transported to Medical Center of Plano with serious injuries.

Quintero-Rosales was being held in the Collin County Jail on a charge of criminally negligent homicide. He has declined News 8's request for an interview.

It was also determined that Quintero-Rosales is an illegal immigrant. He had been deported from Missouri in 2008. He did not have a driver’s license, according to the affidavit.

Texas congressman Rep. John Ratcliffe and Sen. John Cornyn wrote a letter asking for federal intervention in the case.

“I immediately contacted the Attorney General Loretta Lynch and the ICE Director Sara Saldana and requested that ICE exercise their discretion in placing an immediate detainer on Mr. Quintero.”

A federal complaint was filed April 13, stating that Quintero-Rosales had illegally re-entered the United States.

A bank account had been set up for the family to help defer funeral expenses for Hacking.

You can make a donation at any Independent Bank, or directly at the branch in Lavon located at 1009 State Highway 78, Lavon, TX 75166.

Donations can be mailed to:

Independent Bank
PO BOX 399
Lavon, TX 75166

All checks can be made payable to: Peter Hacking Benefit.