A 41-year-old Queens man will now spend more than two decades behind bars for the killing of his estranged wife who he stabbed in front of their young children, prosecutors said.

Oscar Novakovsky of South Richmond Hill was sentenced on Monday to 25 years in prison after he pleaded guilty last month to first-degree manslaughter.

According to prosecutors, on Jan. 15, 2012 between 12 and 1 a.m. Novakovsky stabbed his estranged wife, 32-year-old Diana Sharma, in the neck with a knife while inside her 117th Street home.

RELATED: Upper East Side stabbing leaves one man dead, suspect at large

The fatal stabbing occurred in front of the couple’s three children, who at the time were 3, 5, and 9 years old, Queens District Attorney Richard A. Brown said.

Sharma was discovered with a knife bulging from her neck and with over 150 stab wounds throughout her body, according to authorities.

While in custody, the New York Daily News reported, Novakovsky allegedly told police that their children were screaming and trying to pull him off their mother.

According to the Daily News, a few months before the fatal stabbing Sharma had gotten an order of protection again Novakovsky after he had attempted to strangle her.

“This heinous act committed by a husband against his wife in front of their three small children as they cried and pleaded with him to stop while they attempted to pull him off of her was vicious and unimaginable,” Brown said in a statement. “The children will have to bear the emotional scars of what they witnessed for the rest of their lives. The sentence imposed by the court is more than warranted.”