4-year old shot himself with grandfather's work gun

A 4-year old boy is now in stable condition after accidentally shooting himself with his grandfather's work gun.  

He was rushed to Sinai Grace Hospital after shooting himself in the stomach. Police say that his grandfather is a security guard. As he was getting ready for work late last night, he put his work weapon on top of the refrigerator. 

The young boy somehow climbed on top of some nearby tables and chairs to grab the gun.  When the grandfather walked into the room, the little boy was started and shot himself in the stomach.  

Police are still investigating the situation.