A man killed another man named Charlie Kirk. The man used a gun to do it. After the crime, he ran away and tried to hide.
He left many things behind. The police found this evidence. The evidence helped the police in their search for the killer.
The killer's parents saw his picture on the news. His mother knew it was her son. She felt she had to tell the police.
Because the mother called the police, they were able to make an arrest. They found the son and took him to jail.