MANCHESTER, N.H. —

The prosecution and defense have submitted their sentencing proposals for a man who admitted to killing his sister-in-law and nephews in Northfield in 2022.

Prosecutors are asking the court to consider what was lost in August 2022, when Kassandra Sweeney and her sons, 4-year-old Benjamin and 1-year-old Mason, were murdered at their Northfield home in August 2022.

Sweeney Family

Eric Sweeney was 16 at the time and living with them because Kassandra Sweeney and her husband, Eric Sweeney's brother Sean, were his legal guardians.

Kassandra Sweeney and her sons each died from a single gunshot wound.

Eric Sweeney pleaded guilty in August to three counts of reckless second-degree murder and a charge of falsifying physical evidence.

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