Two men shot and killed 18-year-old Marlon Roldão Soares with up to 15 bullets at the check-in in Porto Alegre Airport in Brazil on the morning of his birthday.
Footage shows the attackers calmly waiting inside the airport before the murder then running into a waiting getaway car after. The victim was with his father and family.
The victim had no criminal record.
The police say they have suspects they are seeking to question but motives at this moment are unknown.