An 18-year-old woman is behind bars after being accused of causing a fatal DWI wreck.
Brownsville police arrested Crissy Guerra on intoxication manslaughter and intoxication assault charges on Sunday.
Investigators told Action 4 News that Guerra was driving home from a bar when she attempted to pass a car.
Police said she ended up losing control and crashed into a railroad post.
Investigators said 20-year-old passenger Roxana Sas was critically injured.
She was airlifted to a San Antonio hospital where she later died.
Another passenger suffered a broken arm.
Guerra remains in custody under $100,000 dollars in bonds.