Published: May 09, 2011 5:39 PM EDT
Updated: May 09, 2011 2:40 PM EDT

COLUMBIA, S.C. (AP) - Police in South Carolina say a 17-year-old shot his mother to death on Mother's Day.

A judge on Monday denied bond for Joshua David McEachern, who has been charged with murder. It is not clear if he has an attorney.

Authorities say the teen shot his 59-year-old mother and 21-year-old brother Sunday night at the family's Greenville home. Police say he then called 911 to report the shooting.

His brother is in critical condition.

McEachern's grandmother, Fran McEachern, tells The Associated Press Monday she last saw her grandson just over a year ago and the teen has mental issues. She says he was a sweet boy but never seemed normal.

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