CAGAYAN DE ORO CITY -- House Speaker Gloria Macapagal-Arroyo and Vice President Leni Robredo both condemned the deadly bombing in Jolo, Sulu Sunday which killed at least 20 people.

• Several killed, dozens wounded in twin blasts at Jolo church

"Very, very tragic. Please do not lose heart, I'm sure that the government will do everything to make things right," Arroyo said.

Robredo also hoped that the perpetrators will be held responsible for the bombing as soon as possible and that no other bombings in the country will ever happen again.

"Itong nangyari sa Sulu, napakalungkot. Sana hindi na ito maulit muli. Mahalaga na kung sino 'yung mga salarin dito, saka 'yung mga biktima mabigyan talaga ng katarungan kasi kung hindi parang nai-involve din lang 'yung iba pa na gumawa ng similar na hakbang," Robredo said.

In an ambush interview, Autonomous Region in Muslim Mindanao Governor Mujiv Hataman blamed the Abu Sayyaf Group for the twin blast.

"Tingin ko, 'yung itsura nun at andar ng utak nun ang may kapasidad lang nun ay ang Abu Sayyaf," Hataman said.

Meanwhile, a bigger and better Laguindingan Airport will be experienced soon by passengers travelling to and from Misamis Oriental with the Civil Aviation Authority of the Philippines' expansion plan.

The development plan was discussed during Arroyo's press conference at the airport before her flight back to Manila from a wedding she attended in Cagayan de Oro City, Sunday.

Arroyo also confirmed that the airport can accommodate international flights as it is equipped with international standard facilities.

"Technically ready pero Customs, Immigration and Quarantine or CIQ and kulang," Arroyo said.

On the other hand, Don Carlos town in Bukidnon will soon have its airport to cater flights to and from Cebu, Cagayan de Oro and Davao.

The project is expected to launch in 2022.

Robredo and Arroyo were among those invited to the wedding of Lanao del Sur Vice Governor Mamintal "Bombit" Adiong's son Mohammad Khalid "Mujam" Adiong in Cagayan de Oro.