Today in terrible accidents: A Tampa, Florida grandmother shot her seven-year-old grandson in the middle of the night because she thought he was an intruder. The boy was rushed to the hospital and remains in critical condition.

The grandmother, Linda Maddox, was staying with her twin grandsons last night while their father worked a night shift. WPTV reports:

The boys' father had gone to work, and the grandmother placed a chair against the bedroom door handle for extra protection.

Just before 1 a.m., Linda Maddox, 63, heard the chair sliding against the wood floor.

Assuming it was an intruder, she grabbed a loaded .22 caliber revolver she keeps by the bed and she fired one shot in the dark, towards the door.

Seconds after firing, she heard the screams of her grandson, Tyler.

Linda Maddox was not arrested. According to the Daily Mail, paramedics on the scene said Tyler would recover.

[Image via Facebook/Daily Mail]