Spanish authorities reported that a powerful explosion rocked a four-story building under renovation in central Madrid, killing two people and injuring at least 18.

Furthermore, Spanish emergency services reported that of the 18 people hurt, most of the injuries were not serious.

On his account, Madrid's Mayor Jose Luis Martinez-Almeida said four people were taken to the hospital, one of whom was in critical condition, and that the cause of the explosion was unknown.

When asked about reports that the explosion was caused by a gas leak, the mayor said it was too early to tell.

“Some work was being done in the building and neighbors said there was a powerful explosion,” he said.

The city of Madrid released a video of paramedics attending to the injured at the scene in the upmarket neighborhood of Salamanca, while police and firefighters cordoned off streets littered with glass and debris.

#MadridExplosión #Madrid
La Policía Nacional sigue en el barrio de Salamanca, con los guías caninos por si fuesen necesarios para la búsqueda de más personas bajo los escombros.
Se confirman, el fallecimiento del los dos operarios de 21 y 27 años.
⬇️Hilo⬇️ pic.twitter.com/WjkHkS69oo

— Tribuna Digital7 (@TribunaLibreES) May 6, 2022

In a tweet, Spanish Prime Minister Pedro Sánchez stated that his office was closely monitoring the situation and offered his condolences to the victims.

In January 2021, a gas leak caused a massive explosion in central Madrid, killing 4 people.