BOGOTA, Colombia (AFP)—Colombia on Wednesday declared three days of mourning for victims of an earthquake that killed 239 people, as rescuers entered what officials called the final phase of the search for survivors.

Monday’s magnitude 7.4 quake, the strongest to hit Colombia this century, devastated towns across the coffee-growing west, leaving at least 3,700 families homeless, according to the national disaster management agency.

The government said flags would be lowered to half-staff on official buildings and at Colombian embassies abroad “in honor of all the dead.”