8. A public transport bus was stopped by the police at a checkpoint. All male passengers were asked to disembark while all female passengers were requested to remain seated. Paul, a police officer, then boarded the bus and upon cursory inspection, noticed a suspicious bulging black bag at the rear of the bus. Paul lifted the bag and found it to be heavy for its size. Severino, the owner of the bag and a non-paying passenger, consented to have it opened and it was revealed that the bag contained a firearm and a live grenade. When Severino failed to produce proof of his authority to carry firearms and explosives, he was arrested and eventually charged with Illegal Possession of Firearms and Explosives. Severino now contends that the search was unreasonable and unconstitutional as it was done without a search warrant. Is Severino correct? Explain.