Last year, a teenager in Maine killed his mother after she confronted him and his friends about her missing marijuana. This week, 16-year-old Lukas Mironovas was sentenced to 33 years in prison.

He pleaded guilty to murder and conspiracy to commit murder in the death of his mother, Kimberly Mironovas. He will spend the remainder of his teenage years in juvenile detention, according to WABI 5. When he hits 18, he will be transferred to the Maine State Prison system where he will serve his sentence.

The 47-year-old Mironovas accused Lukas and his two friends, William Smith and Thomas Severance, of stealing her weed and she wouldn't give her son's friends a ride to Massachusetts as a result. The trio then came up with a plan to kill the older Mironovas. Smith and the younger Mironovas strangled his mother until she passed out, then he stabbed her in the neck.

"All of them have pled guilty to the charges," Assistant Attorney General Meg Elam told WABI 5. "We're relieved for the family that they didn't have to go through further court hearings, and we think the fact that they've been sentenced to prison in the case of the two older men was the right outcome in the case."

Smith, described as the person who motivated the others to go through with the killing, was sentenced to 28 years in November for his role in the murder. "This sentence at least gives Will some hope for the future. He will be released in his early 40s and will have a chance at a life for himself," defense attorney Walter McKee told the Associated Press. "Twenty-eight years is an incredibly long time, though, especially for someone who committed the crime when he was just 15 years old."

Severance, who was not willing to go forward with the murder, will remain at the Longcreek Youth Development Center until he turns 21, according to People. He pleaded guilty to conspiracy to commit murder.

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