EMBED >More News Videos A woman and her two children were shot in a robbery attempt in northern Harris County, HCSO says.

UPDATE: 4yr old girl shot along w mom and sister has died this morning. Family was unloading groceries when shooter tried to rob them #abc13 pic.twitter.com/wcUe1tY9Uf — Courtney Fischer (@CourtneyABC13) November 15, 2016

EMBED >More News Videos A horrific story out of north Harris County, where a 4-year-old girl has died after being shot by two robbery suspects

Happened at Mission Falls Apts in N Harris Co. Mom & other daughter shot are still holding on in hospital. #abc13 pic.twitter.com/dSNegIgwOL — Courtney Fischer (@CourtneyABC13) November 15, 2016

HOUSTON -- A little girl is dead and her mother and young sister were critically injured after they were shot during an attempted robbery in north Harris County, according to sheriff's deputies.This all started around 8:40 p.m. as a 27-year-old woman was carrying groceries to her apartment alongside her 10-year-old and 4-year-old daughters.Investigators said at least two men in a dark-colored sedan pulled up next to them and got out. The men reportedly asked for the woman's purse, but she refused. That's when deputies believe one of the men shot the mother and her two children at close range.MORE:Deputies said at least nine shots were fired. The four-year-old girl was struck in the head. The mother was shot in the stomach, but as she was trying to protect her kids, she apparently didn't even realize she'd been hit until a deputy noticed her shirt was bloody.All three were rushed from the Mission Falls apartment complex on Greens Crossing Boulevard to nearby Houston Northwest Hospital.The youngest victim was then taken by Life Flight to Memorial Hermann Hospital because of the seriousness of her condition. Sadly, she has died from her injuries.Her mother and 10-year-old sister were listed in critical condition early Tuesday morning, fighting for their lives.Harris County Sheriff's Deputy Thomas Gilliland called the heinous act "an absolute tragedy.""A 4-year-old and a 10-year-old shot is pretty horrendous," Gilliland said. "When you have children involved, it's not a great scene to be at."Gilliland said when criminals are desperate, we do not know what they are capable of and that things can turn violent pretty quickly, even against children.The mother told deputies there were two men, but a witness said there were three. Those suspects are still at large, and their descriptions at this point are extremely vague - black men, dark colored clothing, dark car. Deputies are reviewing surveillance video in an effort to get a better description.