UPDATE: Police say they have upgraded the charges against Stephen Daigle after a a toxicology report revealed he had a BAC nearly double the legal driving limit at the time of the crash.

Daigle’s charges were upgraded to two counts of vehicular homicide, one count of first-degree vehicular negligent injuring, and one count of vehicular negligent injuring. Daigle remains incarcerated in the Ascension Parish Jail.

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SORRENTO - Louisiana State Police are investigating a crash that left two people dead Sunday night. 

According to authorities, 47-year-old Stephen Daigle was seen around 9 p.m. weaving in and out of traffic on I-10W near Highway 61. 

He reportedly struck the back of a vehicle driven by 34-year-old Aisha Philson and ran her off the road. Her vehicle overturned and ejected three people while Daigle's vehicle entered the median and struck the cable barrier. 

As a result, 8-year-old Willie Williams Jr. and 1-month-old Arielle Philson, who were not restrained, sustained fatal injuries. 

Aisha and a 12-year-old passenger were also not restrained and sustained serious injuries. 

Daigle suffered minor injuries and was later arrested for negligent homicide, negligent injuring and reckless operation of a motor vehicle. 

The crash remains under investigation.