It's the story that shocked London and made national headlines.

Now, the father of an eight-week-old baby left outside for several hours has an arrest warrant issued for him.

London police Insp. Kevin Heslop confirmed the new information to CTV London.

"I can tell you that an arrest warrant has been issued for a male, for Level 1 assault, as well as two counts of mischief," says Heslop.

The counts relate to incidents against the baby's mother, Megan Sproul and damage to her cellphone.

Sproul alleges she was attacked -- off and on repeatedly -- by the baby's father for at least four and a half hours before she fled with the baby.

As the alleged attacks continued, she says she fled.

She claims the father followed her outside as she tried to get away.

"I went outside to load him (the baby) in the truck and I was attacked outside and when I heard him coming, I put (the baby) down and so that whatever was going to happen, wasn't going to happen to my son," says Sproul.

Sproul says she blacked out and drove off without the baby.

She was later arrested by police for impaired driving by drug.

It's at this point Sproul says she told police about the baby.

Initially, a police spokesperson had said she didn't, but now, police concur with that part of the story.

"Putting it in context, the woman said many different things, and she was rambling, presumably because of the drugs that we believe, she took before she drove the car. Our initial comment was an oversight on our part, once we recognized it, we corrected it right away," says Heslop.

The baby survived without any injury.

But the outstanding question remains, why police didn't immediately launch an assault investigation when Sproul alleged she was attacked?

Heslop says investigations take time and the first priority was ensuring the baby and mother were safe.

Meanwhile, the head of the London Abused Women's Centre, Megan Walker, says she's has asked to meet with police to discuss the case..

"I think the police should have when they took her to the hospital, advised the hospital that she reported being assaulted and strangled. I think the police should have insisted on having the specialized unit involved. I think the police should not have released information that turned out to be not factually correct around what the woman told them in her statement," says Walker.

None of the allegations made by Sproul have been proven in court.