By Jack Fink

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OAK CLIFF (CBSDFW.COM) – Rapid gun shots startled Oak Cliff resident Anthony Cisneros, who lives just down the street where an undercover Arlington police officer was shot just before sunrise Thursday.

Arlington police aren’t giving details about the officer’s injuries, but say he will make a full recovery.

But Cisneros says it was scary. “We woke up to a hail of gunfire. First, you heard like boom, then you heard like boom-boom-boom-boom-boom.”

Oscar Alvarado says the shots woke him up too. “It was like dun-dun-dun, dun-dun, dun.”

Alvarado, who lives in a neighboring apartment complex, says he was too afraid to look outside. “I thought someone was having a gun fight in the parking lot.”

Dallas SWAT officers arrived on Wilbur Street later Thursday morning, and they took positions around the suspect’s house.

Residents say they didn’t realize the victim was a police officer, working as part of an on-going Immigration and Customs Enforcement investigation.

Cisneros says after the gun fire ended, he went outside and spoke with the victim. “He said, he got shot, he got shot. I’m like are you all right? Are you all right? He jumped in a black truck.”

From there, other undercover officers rushed him over to this gas station at Wheatland and Hampton Roads before he was taken to Methodist Hospital in Dallas.

Arlington police say the officer is in good spirits.

Cisneros says he didn’t know what to think. “I thought someone was breaking into a vehicle and when I came out, I didn’t see cops or anything like that.”

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