ViewA 3-year-old old girl accidentally shot and killed her four-year-old old sister, authorities said. According to the Houston Police Department, the toddlers were inside an apartment on Sunday where a group of family members were gathered. Houston County Sheriff Ed Gonzalez said the children were unsupervised in a bedroom where the three-year-old found a loaded semi-automatic pistol and shot her sister. SEE MORE: Biden expected to sign new executive order on gun control"It appears that one... Read this story