In McAllen, ATF agents have arrested two people following investigations into the sale of explosives.

Albert Joseph Ortiz and Mexican national César Giovanni Flores Tirado were arrested Monday after undercover agents bought 16 grenades from the suspects at a residence located on the 800 block of 26 ½ Street. Twenty-eight other explosives were reportedly on hold for purchase. Both men face charges for receiving or possessing a destructive device, the ATF expects additional arrests in the case.