Update: Death toll from Saudi-led airstrikes on Yemen's police camp rises to 31

SANAA, Dec. 13 (Xinhua) -- Death toll from Saudi-led coalition airstrikes on a prison inside a police camp in Yemen's capital Sanaa on Wednesday increased to 31 prisoners and 59 others were wounded, Houthis-controlled state Saba news agency reported.

Earlier the day, Saba cited a security official as saying: "the Saudi-led coalition warplanes launched seven airstrikes on the prison building inside the police camp in downtown Sanaa early Wednesday morning, killing 12 prisoners and injuring 80 others."

The news agency then released its new update, saying the death toll increased to 31.

Meanwhile, a police official, on condition of anonymity, told Xinhua earlier the day that "some of the detainees in the targeted prison were supporters of slain ex-president Ali Abdullah Saleh detained over the past days by Houthis following the death of Saleh."

Saudi Arabia-led military coalition has intensified military air campaign against Houthi positions in and around the Houthi rebels-held capital Sanaa since Houthis killed Saleh on Dec. 4.

The coalition has intervened in the Yemeni conflict in March 2015 to roll back Iranian-aligned Houthi rebels and backed internationally recognized President Abd-Rabbu Mansour Hadi whom Houthis forced into exile in Saudi Arabia.

The war has killed over 10,000 Yemenis, mostly children, displaced 3 million and triggered the world's most humanitarian catastrophe.

Tensions have escalated in Sanaa after Houthis killed their top ally strongman Saleh after he changed alliance and backed the anti-Houthi coalition. Enditem