A Texas man was arrested after police say he commandeered an ambulance at knifepoint and reached speeds of 70 mph along city streets before crashing into a fence.

Investigators say the emergency lights were flashing as 29-year-old Kenneth Golightly of Fort Worth sped away Wednesday after ordering two EMTs from the ambulance.

Police say the two workers initially ignored Golightly when he approached them as they were completing paperwork. Then he pulled the knife.

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