Police have charged a 46-year-old Westchester, N.Y., woman with murder after they found her 4-year-old son dead in the bedroom Monday.

Manuela Maria Morgado was arraigned in Village of Mamaroneck Court and was remanded to Westchester County without bail.

She is due back in court on Oct. 4. It was not immediately clear whether she has an attorney. 

For more visit NBCNewYork.com.

Officers were called to 1035 East Boston Post Rd. in the village of Mamaroneck at about 10:20 a.m. Monday, when a concerned family member asked them to check on the well-being of Morgado. 

When police entered the bedroom there, they found the boy, Jason Reish, dead, and his mother groggy and semi-conscious. 

Morgado was transported to the hospital for evaluation. Authorities were looking into whether she may have killed her son, then tried to kill herself. 

"He was a great kid," said Reish's pre-school teacher, who did not want to be identified. "That's all I can say." 

The tragedy startled neighbors at the suburban apartment complex in Mamaroneck. Those who knew the Reish family said there was no hint of any trouble in the home. 

"She's just a sweet person," neighbor Andrew Landau said of the boy's mother. "Nothing bad I could say about her. Nothing that would say I saw them fighting or whatever. Nothing at all."

More content from NBCNews.com:

• Calif. governor vetoes bill that OK'd towns freeing undocumented immigrants
• Feds: Suspect in multimillion-dollar scam is Harvard law grad
• Pranked teen shines at homecoming ceremony
• Police: No foul play in missing NJ teen Kara Alongi case
• Video: Gearing up for Wednesday's big debate

Follow US News from NBCNews.com on Twitter and Facebook