Brady Oestrike, the suspect in Charles Oppenneer's slaying, fled police Thursday night and crashed in Grand Rapids. Authorities found the body of pregnant teen Brooke Slocum in the trunk of his car.

WYOMING, MI -- As police investigate a Craigslist connection between Brady Oestrike and the three victims he's suspected of killing, a woman is revealing a past encounter where Oestrike allegedly described holding a female captive.

The witness works at an Eastown bar and described how Oestrike came in three months ago and bragged about his actions.The witness did not want to be identified, but Oestrike allegedly told her and others that he had a woman tied up at his house.

He supposedly met the woman on Craigslist, picked her up and then put her in a suitcase and into his trunk before apparently taking her to his house.

Bar staff called police on a non-emergency number asked them to look into it. The bar worker claimed police did respond, and discovered that Oestrike allegedly had a contract with the woman for role-playing. She was not harmed.

The bar worker said Oestrike stopped coming to the bar after he learned that staff had called police.

"He used to be a regular until that night," she said.

Wyoming police say Oestrike communicated with 18-year-old Brooke Slocum via Craigslist late Saturday, July 12, before she went missing. Police say Oestrike is responsible for the deaths of the pregnant Slocum,her child and her 25-year-old boyfriend, Charlie Oppenneer.

Oppenneer's body was found about noon Wednesday in a wooded area near Gezon Park, not far from his abandoned vehicle.

Police found Slocum's body in the trunk of Oestrike's Chevy Cobalt after he crashed during a late Thursday police chase on Burton Street SW at U.S. 131. Police believe he shot himself in the moments after the crash.

Wyoming police Chief James Carmody noted the Craiglist connection during a Friday press conference, but would not divulge any further details.

However, at least two Craigslist ads in the past month appear to describe Slocum and her boyfriend by the ages and descriptions cited. In the ads, a woman is looking for services. The Grand Rapids Press/MLive.com is not detailing the content of the ads because they have not been verified as being from Slocum and Oppenneer.

In a statement from Wyoming police on Friday, detectives said they will not comment on "case facts."

"We are concerned that information being posted could jeopardize our investigation. We are asking that you refrain from speculating and allow us to release information to you in a responsible and factual manner," according to a statement released by Capt. Kim Koster.

Please understand that we are committing valuable police resources to this investigation that should not be diverted by the need to address social media rumors and innuendos," the statement said.

E-mail John Tunison: jtunison@mlive.com and follow him on Twitter at twitter.com/johntunison