Border Patrol officials have concluded that agents acted properly while opening fire while on duty on four different occasions, The Los Angeles Times reports.
An internal panel for Customs and Border Protection reviewed the cases after concerns about a pattern of agents using deadline force.
CBP also is investigating 14 other shootings.
In one of the cases where agents were found to have acted properly, they repeatedly fired at the engine of a boat smuggling immigrants near Solana Beach in San Diego County in June 2015.
After the shooting, the boat crashed with the agent’s boat and capsized. One woman drowned.
Two other cases involve agents opening fire on people throwing rocks at them.
In the fourth shooting, an agent shot a suspect who was clutching a rifle and fleeing local police.