Johnathan Aguiluz, 14, charged in death of baby sister

A 14-year-old boy has been charged as an adult with first-degree murder in the death of his infant sister, Montgomery County Police say.

“It’s sad, very sad,” says Sheka Sesay, a neighbor.

Investigators say Thursday night around 10:30, Gloria Yanes left for work, leaving her 14-year-old son,{ }Johnathan Aguiluz, to babysit 7-month-old Larissa Yanes overnight. Police say the baby had upper body injuries.

“He admitted to causing those injuries and also placing his hands over her mouth and nose as she was crying,” says Captain Paul Starks of the Montgomery County Police.

When she stopped crying, police say the teen told them he placed in her in her car seat. The mother returned home around 5:30 a.m. and thought Larissa was sleeping. Thirty minutes later when she tried to wake her for a feeding, she realized the baby was unresponsive. Montgomery County Fire/Rescue took her to a hospital where she was pronounced dead at 6:54 a.m.

“She never even had a chance at life,” says Brian McCoy, a neighbor. “[It’s] really a shame and now it’s really two lives taken away. The 14-year-old just lost his life, too.”

Now neighbors are asking why the teen was left in charge of the infant.

“He’s 14. He doesn’t know how to handle a crying baby,” says McCoy.

“In Maryland, it is permissible to have a 14-year-old watch a younger sibling under normal circumstances, but there are some details I can’t release as this investigation goes on,” says Capt. Starks.

Aguiluz, who has been charged as an adult with first-degree murder, remains in custody, held without bond. He's scheduled for a bond review in Rockville at 1:00 p.m. on Monday, February 11.