Updated

Three teenagers have been charged with capital murder, accused of fatally shooting a 4-year-old Houston-area girl while they tried to rob her mother as the family unloaded groceries in the parking lot of their apartment complex.

Authorities say Ava Castillo, her mother and her 10-year-old sister had returned home on Nov. 14 when robbers ambushed them and tried to take her mother's purse. During the robbery, Ava was fatally shot while her sister and mother were injured by gunfire.

The Harris County Sheriff's Office announced on Friday that investigators had arrested three teenagers in connection with Ava's death. They were identified in court documents as: 18-year-old Philip Battles; 17-year-old Ferrell Dardar; and 17-year-old Marco Miller.

Court records did not list attorneys for the three teenagers, who remained jailed Friday.