The video above shows the aftermath and offers additional information on the ground.
At least 27 people have been killed and more than 70 injured after two bombs were detonated outside a Roman Catholic cathedral on a southern Philippine island.
The first bomb went off in or near the Jolo cathedral in the provincial capital during Sunday Mass.
A second blast occurred outside the compound as government forces were responding to the attack, security officials said.
Police said at least 27 people died and 77 were wounded.
The dead were 20 civilians and seven soldiers, and the wounded were 14 troops, two police and 61 civilians.
Photos on social media showed debris and bodies lying on a busy street outside the Cathedral of Our Lady of Mount Carmel, which has been hit by bombs in the past.
Troops in armored carriers sealed off the main road leading to the church while vehicles were transporting the dead and wounded to the hospital.
Some casualties were evacuated by air to nearby Zamboanga city.
Lord have mercy. The age of martyrs continues.
Eternal rest grant unto them, O Lord…