The father of two young girls whose mother was gunned down in an execution-style killing in front of them is demanding custody of the kids. Since an unknown gunman murdered 30-year-old Lakisha Scriven earlier this month, her daughters Alanna, 8, and Aleila, 5, have been staying with their grandmother. But their 37-year-old father Clarence White — who had moved out of Scriven's house before the killing after disputes and threats — wants his kids back. His attorney claims Scriven's mother illegally "absconded" with the children. "His rights as a father have been completely trampled on," the attorney told the Post. "We want the kids back where they belong; with their father for Christmas."