In the early hours of 24 July 2011, a fire broke out in the relay room on the west side of the station. As a result, serious and unavoidable disruption to services occurred, including a temporary partial closure of Metro line B, between Castro Pretorio and Monti Tiburtini. The fire damaged equipment within the relay room, rendering the majority of controls for nearby tracks and traffic signals alike unusable, leaving a vital part of the Italian rail network disabled; reportedly, this led to significant train delays throughout the country. Furthermore, the damage to the structure had reportedly rendered the station building in danger of collapse; due to the impact of the fire, further problems and service delays that occurred for many months afterwards were attributed to the accident.