People gather at the site of a bomb explosion in Sanaa Dec. 23, 2014.

Two militants were killed after five bombs exploded on Tuesday in Sanaa’s old quarter, where many supporters of the Houthi group live, according to a Yemeni security official, Agence France-Presse reported.

No one has claimed responsibility for the attacks, but the Houthis have been fighting the Sunni Islamist militant al-Qaeda group and allied tribesmen since its gunmen captured Sanaa in September and forced the resignation of a government they had long seen as corrupt.

Witnesses said the blasts occurred early in the morning at a time when only a few people were on the streets, Reuters news agency reported. One of the bombs exploded when a member of the Houthi militia tried to dismantle it, residents said.

Several houses and some cars were damaged from the explosions.

Yemen has been in turmoil since mass protests in 2011 forced long-ruling President Ali Abdullah Saleh to step down. But tensions have increased after the Houthi takeover of Sanaa in September.

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