STAMFORD -- State police have arrested a 26-year-old Hartford woman for driving under the influence after allegedly causing a fiery crash that killed a tractor-trailer driver and a passenger early Saturday morning in Darien.

Yadira Torres of 100 Benton St., Apt. 105, Hartford, was taken into custody at Norwalk Hospital where she was being treated for minor injuries after the 6:12 a.m. accident. She is being charged with two counts of second-degree manslaughter, driving while under the influence of drugs or alcohol and reckless driving.

Torres is being held on $100,000 bond and is expected to appear in state Superior Court in Stamford on Monday to be arraigned.

The identities of the man and woman killed in the accident have not been released pending family notification.

The accident shut down Interstate 95 northbound for more than six hours Saturday morning backing up traffic in both directions for miles and snarling local roads in both Darien and Stamford.

A preliminary investigation of the accident found that the rented Dodge Caliber driven by Torres and carrying three female passengers passed the truck on the right but then lost control and hit the truck, state police said. The truck then spun around and overturned causing the freight container it was hauling to separate from the trailer and the tractor to burst into flames near Exit 10.

Motorists in the area were able to pull the female passenger out of the burning cab, but she suffered extensive burns and was pronounced dead at Stamford Hospital a short time later, according to state police.

The male driver of the truck was pronounced dead at the scene.

Noroton Heights Fire Chief Ron Riolo said the fire was extinguished quickly.

Riolo said the accident ranks among some of the worst he has seen on the highway, which at one time was one of the most accident-prone stretches of I-95 in the state.

"It wasn't good," Riolo said. "It was a mess."

Anyone who witnessed the accident is asked to call state police, Troop G, in Bridgeport at 203-696-2500.