CHICAGO (CBS) — Police in Yorkville are calling it a terrible tragedy–the apparent suicide of a very young boy.

WBBM Newsradio’s Regine Schlesinger reports, the boy, only 11 years old and a sixth grader, apparently shot himself in the head with his mother’s service revolver at home on Tuesday morning.

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She’s a Kane County sheriff’s officer.

It’s unclear how he got access to the gun.

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Sheriff Richard Randall says an internal investigation is underway into whether the mother violated rules about the handling and storage of her weapon.

The head of a suicide prevention service in Batavia says she’s seeing ever younger children killing themselves, often because of bullying including emails and texts they can’t escape.

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She says younger children are less able to handle it.