Grapevine police said a Lewisville woman got into an intense argument with her boyfriend, Michael Jerome Walker, at about 11 p.m. Saturday. The couple was traveling from the woman’s home in Lewisville to Walker’s home in Fort Worth. They were on southbound State Highway 121, just north of the merger with State Highway 114 and the north airport entrance gate.
“At one point, he threatened to harm her and actually hit her in the side of the head,” said Lt. Todd Dearing with the Grapevine Police Department.
The woman stopped her car right in the middle of traffic and tried to flag down help, Dearing said.
Walker then turned his concentration to the woman’s son. According to police, Walker is not the biological father of the child.
“He said, ‘I'm about to put Mommy to sleep and she's not going to wake up,’” Dearing said.
Walker then lifted the child up in the air and shook him violently, according to witnesses.
During the incident, several drivers called 911.
“The guy has some woman's baby, and the baby got thrown out onto the middle of the highway,” one caller told 911.
Walker shoved the boy into oncoming traffic after he shook free of Walker, Dearing said.
Within seconds, a van slammed into the mother's car, turning it sideways.
The child was not injured during the incident.
“It’s really amazing that no one was hurt,” Dearing said. “The shaking of the child didn’t harm him.”
The mother refused medical attention for her child, according to police.
Walker remained jailed Tuesday in Grapevine on three counts of assault, endangering a child -- which is a second degree felony -- and making terroristic threats against the woman. He also has 11 outstanding traffic warrants across multiple counties, according to Dearing.
“Everybody was very, very lucky that no one got more seriously hurt,” Dearing said.
Dearing said the couple has no prior incidents in Grapevine.