Liege, Belgium: Two five-story apartment buildings have collapsed in eastern Belgium, injuring at least 20 people. Rescue workers are looking for survivors through the rubble.

The apartments in the center of the city of Liege came down after a loud explosion at around 2 am (0100GMT) Wednesday.

Mayor Willy Demeyer told VRT network that two people were critically injured, adding that firefighters are looking for those who are still inside.

The explosion in the heart of the city also damaged several other buildings, and Demeyer warned that others might collapse too.