Ho Chi Minh City police on Tuesday announced the arrest of two local men for allegedly attempting to ship a grenade and a rifle to Hanoi in a guitar.
Police identified the men only by their first names as Thu and Ngoc and said they asked the GNN shipping company in Tan Binh District to send the item to Hanoi for them on Saturday.
A GNN workers later sent the package to Tan Son Nhat airport, where a security team discovered a grenade, a rifle and five bullets inside the guitar after scanning it.
Tan Binh police arrested the men on Monday as they attempted to pick up the guitar after being told it couldn't be shipped.
An investigation into the case remains underway, police say.