US News

How carjack captive escaped at gas station

The Boston Marathon bombers took a man captive Thursday night during a carjacking that set off a frenzied police chase.

“[The captive] came in here, he was in a rush running in here. T . . . telling the [night cashier], ‘They are going to kill me! You need to call 911!” said Martin El Koussa, 20, who works at a Cambridge, Mass., Mobil station.

Security footage captured the man running away from his captors.

“He was terrified,” said Koussa of the captive. “He crawled on the ground behind the counter and hid.”

Sources said the bombers had carjacked a Mercedes SUV, then used the driver’s ATM card to take out $800.

They drove to a Shell station, where Dzhokhar Tsarnaev grabbed a bunch of junk food while his brother waited outside, sources said.

“He was real calm, just browsing around. No emotion. He was calm like nothing happened,” said station owner Alan Mednick, who reviewed the security footage before handing it over to police.

Dzhokhar dropped the food — Red Bulls, chips and candy — when the owner caught him trying to shoplift.

That’s when the car owner ran to the Mobil and the bombers drove away.

“I have no idea why they stopped here,” said Mednick bewildered. “The cashier, his wife, and his whole family are scared to death right now.”