WYOMING, Mich. (WZZM) -- Police have identified the man suspected of killing an eight months pregnant woman and her boyfriend.

Brady Oestrike, 31, of Wyoming committed suicide after crashing his car on the Burton Street entrance ramp to northbound U.S. 131 during a police chase Thursday night.

Inside the car trunk was the body of 18-year-old Brooke Slocum, who was just weeks from her due date, according to family members.

Around 9:15 p.m. Thursday, investigators were in the process of obtaining a search
warrant for Oestrike's home on Taft Avenue when he left in a yellow 2005 Chevrolet Cobalt. The house was under surveillance in connection with the death of Charles Oppenneer, whose body was discovered Wednesday afternoon in a wooded area just north of Gezon Court.

RELATED: Pregnant teen missing, boyfriend found dead

Autopsy results are still pending for Slocum and Oppenneer and police have not released how they were killed.

Investigators say Oestrike contacted Slocum on Craigslist before the murders, according to a search of her computer.

WZZM 13 found two ads on that site that could have been involved in this case. One was posted about a month ago by a woman claiming to be 8 months pregnant. In the ad, the woman writes she is looking for someone to have sex with her boyfriend and possibly herself. The ad says the man is 25, the same age as Oppenneer, and the woman's age matches Slocum's: 18.

Wyoming police have not yet determined a motive and are still investigating if Oestrike acted alone.

Assault rifles were found in Oestrike's home, which was being searched by a forensics teams Friday morning. Oestrike's sister told WZZM she was in shock and did not believe he was capable or murder.

State records show Oestrike had a criminal past, including larceny and retail fraud in Grandville in 2003. He also appeared to have an online alias of Joat Amos.

Wyoming Police Chief James Carmody said of the murders, "We have three victims: Charles Oppenneer, Brooke Slocum, and her unborn child." He added officers searched intensely for Slocum. "I have not seen better police work in my career," Carmody said in a news conference Friday morning.

Below is a news release from the Wyoming Department of Public Safety:

The Wyoming Police Department is still fully engaged in an ongoing investigation into the circumstances surrounding the deaths of 25-year-old Charles Oppenneer and 18-year-old Brooke Slocum.

While investigating an abandoned vehicle at approximately 12 p.m. on Wednesday, July 16, officers with the Wyoming Department of Public Safety located Oppenneer's body in a wooded area just north of Gezon Court in Wyoming.

While identifying Oppenneer, it was determined that he was Slocum's last known contact. At that time, the Wyoming Department of Public Safety named Slocum as a missing person.

As a result of the missing person investigation, police executed a search warrant on Slocum's computer. With the help of the Internet Crimes Against Children, or ICAC, forensic team, investigators found information from Slocum's computer that led them to identify 31-year-old Brady E. Oestrike – birthdate Dec. 4, 1982 – as a suspect.

Yesterday at approximately 9:15 p.m. investigators were in the process of obtaining a search warrant for Oestrike's residence when he was observed leaving the residence in a yellow, 2005 Chevrolet Cobalt.

Police pursued the vehicle eastbound on Burton Street from the Burlingame Avenue to the US 131 overpass where the suspect crashed into a cement barrier on the northeast corner of the entrance ramp to northbound 131. The suspect was located in the vehicle and was pronounced deceased at the scene from what appeared to be a self-inflicted gunshot wound to the head. A search of the suspect's vehicle resulted in the recovery of Brooke Slocum whose deceased body was found in the trunk.

As part of its ongoing investigation, the Wyoming Department of Public Safety did discover a number of assault-type weapons in Oestrike's home. The investigation of Oestrike's home and the circumstances surrounding this tragedy is ongoing in order to verify Oestrike acted alone and that there are no other victims.

The Wyoming Department of Public Safety extends its deepest condolences to the families of those involved in this tragic situation. The families have asked that their privacy be respected during this difficult time.

The department would also like to thank ICAC, Michigan State Police, the Kent County Prosecutor's Office and the Grand Rapids Police Department for their assistance during the investigation.

The Wyoming Department of Public Safety will be prepared to share additional information on Tuesday, July 22.

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