The man who fatally stabbed his two children Marcel Ndossoka, 8, and his one-year-old sister, Anna-Belle Faith Ndossoka, while they were visiting him at his Houston, Texas home on Saturday.
The suspect told police that the kids begged for their lives before he slit their throats.
Jean Pierre Ndossoka told authorities that his eight-year-old son pleaded with him while his daughter, one, just cried.
‘Daddy, I’m sorry,’ the little boy said, according to court documents.
61-year-old Ndossoka then fled Southwest Houston after the double slaying. Police found the fugitive in his car in Pasadena the next morning, still alive but bleeding from a self-inflicted gunshot wound.
The Houston Chronicle reports that Ndossoka had been calling his estranged-wife, Sabine Ntongo, while she was at work.
At around 3.30pm Ndossoka called her and told her he’d killed the children and had ‘left a present’ for her.

Ntongo called 911 and rushed over to Ndossoka’s apartment in southwest Houston, where she found both children stabbed to death, lying on the bed.
Officers found a bloody knife and hand-written note in French close to the bed. It said that Ntongo would ‘carry the burden’ of her two children’s soul.
‘Daddy, I’m sorry,’ the little boy was said to have said. He is pictured with his sister.
[Ndossoka [left] in his note said he planned to die with his children.
But Ndossoka had fled and when police found him, he had suffered a self-inflicted gunshot wound.
Houston police say 61-year-old Jean Pierre Ndossoka was taken to a hospital in stable condition Sunday after authorities located him in Pasadena, just southeast of Houston.
The tragedy began to unfold early Saturday, after Sabine Ntongo dropped her kids off at their father’s apartment for visitation, police said, before their dad murdered them and fled his home.
All day, Ndossoka called his wife while she was at work. Mid-afternoon, he told her she needed to come by his apartment.
He’d killed the children and “left her a present,” he allegedly said. There would be a key under the mat so she could come find it, he told her, according to court records.
He was charged with two counts of capital murder, one for each child.
If convicted, he could face the death penalty.

Sabine Ntongo is comforted by family after she found the bodies of her two young children. The alleged killer, Ndossoka, called Ntongo on Saturday afternoon and confessed to killing the children

At first he said he didn’t remember what happened, according to court records.
After he was arrested, he claimed to have had high blood pressure and while he initially claimed to have not remembered what happened, he admitted that he ‘did something bad’ while at the hospital.