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Regina Santos-Aviles, a congressional staffer for Rep. Tony Gonzales died earlier this month in Uvalde, Texas, after she caught on fire

In an update, police said that Santos-Aviles was alone in her backyard when the fire began

Authorities do not believe anyone else was involved, but did not share any other additional details

Officials have released new information about the death of Regina Santos-Aviles, a congressional staffer who caught on fire at her residence earlier this month.

During the ongoing investigation, detectives submitted a home surveillance system to the Texas Department of Public Safety Crime Laboratory for review, Uvalde Police Chief Homer Delgado said in a new statement shared with PEOPLE on Tuesday, Sept. 23.

"Today, our agency received preliminary

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