Amazon delivery drivers have reported being locked out of a warehouse facility in Oklahoma as tornado sirens blared and severe weather threatened the area, according to worker accounts.

The drivers alleged that warehouse management shut and locked the doors to the facility, preventing dozens of workers from seeking shelter inside as a tornado approached the region. The incident occurred as warning sirens were actively sounding in the area.

The allegations raise questions about workplace safety protocols during severe weather events at Amazon facilities. Tornadoes pose significant danger in Oklahoma, which sits in the heart of Tornado Alley and regularly experiences severe weather conditions during storm season.

Amazon has not immediately responded to requests for comment regarding the specific incident or the company's severe weather safety procedures at its Oklahoma facilities. The company operates multiple warehouse and distribution centers across the state to support its delivery network.