Sixth FedEx parcel bomb blast in Austin, Texas: 2 dead, Trump terms it sick

Emergency teams rushed on Tuesday to another reported explosion in Austin -- this one at a Goodwill store -- but police and federal authorities said the blast wasn't related to recent bombings that have killed and injured people and caused panic across Texas' capital for weeks.

Police and emergency response teams said an "incendiary device" exploded, injuring a man in his 30s. Nearby stores, shopping centres and restaurants were evacuated. But police and the US Bureau of Alcohol, Tobacco, Firearms and Explosives said a short time later that it was unrelated to the previous blasts.

Gary Davis, president and CEO of Goodwill Texas, stood outside a police barrier huddling with other Goodwill employees. He said the device was contained in a bag and detonated when a worker moved it.

"We put all the donations we get in a big cardboard box. He pulled something out in a bag, completely normal, and the device went off," Davis said.