LAFAYETTE, Ind. (WLFI) — Police are staying tight-lipped about what led to a double homicide in Lafayette Tuesday.

News 18 spoke with people in the north side neighborhood where it happened. That includes a person who said he witnessed one of the shootings.

"I heard like four gunshots. 'Pow, pow, pow'," said Patrick Gibson.

That's when Gibson said he went outside his home at the corner of Hart and 16th streets.

"I would never just expect to see it like right there in my face," Gibson said.

He said he'll never forget what he saw while standing in his yard.

"No less than like 10 minutes later, the lady just came up and picked up the gun and just put it to his head," he said. "Just 'pop', and he just dropped."

Gibson said it looked like a robbery gone wrong.

When police got there at about 11:14 p.m. Monday, 19-year-old Alberto Vanmeter and 37-year-old Joshua Ungersma were found shot dead.

Deputy coroner Carrie Costello said Ungersma was a delivery driver for Domino's Pizza in Lafayette. Police would not confirm if that had anything to do with the investigation.

However, a 17-year-old girl has been arrested in connection with what happened.

"The girl was like crying hysterically," Gibson explained. "Her brother or whoever he was to her just got killed."

While some of the people we spoke with say this is a relatively quiet neighborhood, Kevin Osborn said he's ready to pack up and leave after what happened.

"My wife and I have already started looking at property in another city," said Osborn. "We've just had enough."

Osborn lives across the alley from where the shooting happened. He said the sound of gunfire is not unusual.

"This is the third night in two weeks that we've heard gunshots in this neighborhood," he explained. "So it's not the friendly neighborhood everybody believes it is."

Gibson said he's not surprised by what happened. He just never thought he'd be a witness.

"Just shocked," said Gibson. "What else can you expect? It was a crazy night."

News 18 stopped by the Domino's Pizza on Greenbush Street. That's the nearest location to the crime.

No one was there to comment.

The 17-year-old arrested faces robbery and murder charges. News 18 is not releasing the name given to us by police until she has been formally charged as an adult.

She's set to make her first court appearance Wednesday.