Luis Bonilla was found guilty Friday on two counts of manslaughter and one charge of aggravated assault after four days of witness testimony in his jury trial.
The jury of four men and nine women will decide Bonilla's punishment Monday morning, according to Assistant District Attorney Michael Graves.
His charges carry a maximum of 20 years in prison. He also is eligible for probation, Graves said.
Bonilla, 37, was accused of starting a multi-car crash on Feb. 6, 2016, while driving his Ford F-350 on East University Drive near Mayhill Road. According to a Denton police arrest affidavit, he struck a Nissan minivan while traveling between 65 and 70 mph, resulting in the deaths of 8-year-old Edgar De Luna and 11-year-old Lesly De Luna, both from Whitesboro. Another minivan passenger, a 4-year-old boy, was severely injured in the wreck.
Denton police said they believe Bonilla was making a phone call before the crash.
"This has been a long, heartbreaking journey for the De Luna family," said Graves, who is one of the prosecutors on the case. "We look forward to presenting punishment evidence on Monday."
Denton police investigate report of woman with possible homicidal tendencies
Police had trouble contacting a woman who Denton County MHMR officials believe showed homicidal tendencies toward her son, according to a police report.
The woman's son initially called MHMR, which treats people with a mental health diagnosis or developmental disabilities, about 3 p.m. Thursday about her recent behavior. The son said she posted her "last will and testament" on Facebook, according to the police report.
The report did not elaborate on the posting, but the son said he believed his mother would harm herself.
Denton police tried calling the woman, but she hung up on the officer and eventually turned off her phone, the report said. Police still couldn't locate her after checking her home and doctor's office.
No arrests have been made.
300 block of Dallas Drive — A man said a suspect stole the rear bumper of his work van and cut the tailgate wires on Thursday.
The damage was estimated to be more than $300, according to the police report. No arrests were made.
200 block of Ruddell Street — Someone poured sugar into a woman's gas tank in the past few days at her home, according to a police report.
Police said it happened between 8:30 a.m. Monday and 8:30 a.m. Thursday. The woman realized it Thursday morning when white smoke was coming out of the exhaust system, she said.
Charges have not been filed.
Intersection of Sunburst Trail and Riverchase Trail — A woman told police Thursday her 13-year-old daughter had been assaulted by two other girls the previous day when she got off the school bus.
She said her daughter suffered a sprained knee from the incident, according to the police report. Police filed an assault report, and no arrests were made.
1000 block of Fulton Street — Police were called to Denton High School on Thursday because a student drew a picture of a bomb, according to a police report.
The report did not include any further information. No charges were filed.
2300 block of Bray Village Drive — A 57-year-old woman claimed someone she knew had been trying to poison her, according to a police report.
The report did not include any details with the claim. No arrests were made.
From 7 a.m. Thursday to 7 a.m. Friday:
Area police booked 33 people into Denton County Jail.
Denton police handled 180 calls for service and made six arrests.
Denton firefighters handled 25 medical calls, three vehicles crashes, two grass fires and one building fire.