According to court documents, a Baltimore teenager was charged with the murder of his 8-year-old brother using a shotgun that he acquired by trading in a puppy.

Devin Wilson (18) was arrested on Tuesday, January 17, under an arrest warrant. He is charged with assault and first- and second-degree murder, assault, and weapons in connection to the Dec. 30, killing of Dylan King.

Wilson was babysitting his four younger siblings, ranging in age from 2 to 8 years old, when he called his mother asking her to come home because Dylan had been shot, according to the charging documents cited by Fox 5 Baltimore.

When Wilson's stepfather returned home, the teen allegedly claimed Dylan had accidentally shot himself in the head.

Police who responded to the family's home in the 2100 block of Presbury Street found a neighbor performing CPR on the 8-year-old boy, who was later pronounced dead.

While at the scene, an officer reported hearing sobbing coming from an upstairs bedroom and discovered Wilson inside wearing blood-soaked clothes and pointing a shotgun to his own forehead, according to the filings released Wednesday, Jan. 18.

Wilson was eventually convinced by the officer to drop the weapon and was taken into custody. He was then transported to a hospital for a mental health evaluation.

The medical examiner’s office ruled Dylan’s death a homicide by a single shotgun wound.

According to the charging documents, Wilson’s stepfather told police he had recently become interested in guns and was taken to a shooting range for his birthday.

The stepfather also said that Wilson had traded in a puppy to purchase the shotgun that was used in his brother’s killing, according to WBAL-TV.

Authorities pointed out that the transaction was not illegal because Wilson is 18 and had no criminal history when he bought the Silver Eagle pump action shotgun.

Wilson was ordered jailed without bail. He is due in court for a preliminary hearing on Feb. 15.

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