I do not deny that mistakes have been made, he says in a speech in the regional parliament of the Spanish region, according to media on the spot.
Over 200 people have been confirmed dead since the heavy rainfall last week triggered flooding in the coastal region. The regional leadership has received harsh criticism for both poor preparedness and slowness in sending help and requesting assistance from the central government and the EU once the disaster was a fact.
There are persistent demands for Mazón to resign. His position was already weakened earlier, after the right-wing populist Vox left his governing coalition last summer.
Vox is among those who absolutely do not want to link the disaster weather to human-induced climate change. Other Spanish parties, on the other hand, say that the tragedy shows the urgency of reducing emissions.