Krystal Vasquez and Mark Mata, both 28, are accused of making a daring run from police officers in Castle Hills with three young children in tow.

They were arrested early Wednesday morning in the 2100 block of NW Military.

According to Chief Wayne Davis, officers tried to make a traffic stop on the couple’s vehicle near Loop 410 and Honeysuckle Lane, but the driver refused to pull over.

“It was an equipment violation on a vehicle,” Davis said. "During the time the officer was pursuing the vehicle, the passenger was throwing a white powdery substance out of the passenger side window."

The powder, Davis said, turned out to be cocaine.

He said it was such a large quantity that the officer, at first, believed it was smoke coming from the vehicle.

Officers were able to recover some of it, as well as an unknown amount of marijuana, Davis said.

He said Vasquez, who was at the wheel, finally stopped the car at the intersection of NW Military and West Avenue.

That’s when officers discovered there were three children — ages 1, 3 and 5 — in the back seat.

“The children were all fine,” Davis said. “We released them to a responsible adult, a relative.”

Both Vasquez and Mata were arrested at the scene and charged with three counts of endangering a child.

Mata also faces charges for manufacturing/delivering a controlled substance and tampering with evidence, while Vasquez has an additional charge of evading arrest.

By 6 a.m. Thursday, the two had posted bond and were released from jail.

Both suspects have criminal records which include prior arrests on drug related charges.

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