Shooting at Multi-Car crash in Arlington TX

Two people are dead after a multi-vehicle accident and shooting in Arlington, Texas, outside Dallas.
Update at 8:20 p.m. ET: The SUV, initially thought to be a black Cadillac Escalade, apparently was a dark blue Chevy Tahoe, the Fort Worth newspaper says.

The SUV, which witnesses said was traveling at high speed, rear-ended a gray Dodge pickup that was stopped at an intersection, killing the driver. Six other vehicles then crashed.

At some point, "a young man walked up to the driver's side of the SUV and was shot," said Arlington Police Sgt. Christopher Cook. It's still not clear whether the unidentified victim came from a vehicle or was a bystander trying to help, he added.

Officials have taken into custody twin toddlers who were in the SUV and are related to the unidentified driver, who has been charged.

Update at 5:51 p.m. ET: A hit-and-run chase preceded the pileup and shooting, a witness tells the Fort Worth Star-Telegram. The SUV driver who caused the wreck was "ranting and raving, half-laughing" before he fired out the driver's window.

The gunshot victim was described as a young man, perhaps a teenager.
Here's a photo gallery.

Update at 5:02 p.m. ET: Here's a photo showing the black Cadillac Escalade and a pickup truck that were among eight vehicles involved in the crash.

Witnesses said that one of two dead appeared to be the driver of the pickup.

Update at 4:39 p.m. ET: A witness tells the Fort Worth Star-Telegram that the driver of a Cadillac Escalade involved in the crash shot someone in the head who had come to help him.
The driver was described as "very belligerent" and was shouting at people "incoherently and pushing them away."

Two young children were reported to be in the back of the SUV. CBS 11 reports that a witness saw emergency workers carrying one child away from the scene. Their conditions are not yet known.
At least eight vehicles were involved in the chain-reaction crash.

Another witness told CBS 11-TV that a dark SUV was speeding, possibly more than 100 mph, before slamming into several vehicles. At least two were reportedly cut nearly in half.

Original post: Two people are dead after a multi-vehicle accident and shooting outside Dallas, according to local news reports.

It's not yet clear whether the victims died in the crash or from gunshots, police say. Witnesses told NBC 5-TV they heard a single gunshot right after the crash involving six or seven cars in North Arlington, Texas, about 1:45 p.m. CT (2:45 p.m. ET).

The station reports that one person was taken away in handcuffs.

Several motorists were injured and some were trapped in their vehicles.

http://content.usatoday.com/communities/ondeadline/post/2011/12/2-dead-after-multi-car-crash-shooting-near-dallas/1