A Yemeni military police colonel shot dead Tuesday was the fourth officer to be killed in suspected militant attacks in the capital Sanaa in two days, an official said.

A Yemeni military police colonel shot dead Tuesday was the fourth officer to be killed in suspected militant attacks in the capital Sanaa in two days, an official said.

Similar attacks in the past have been blamed on Al-Qaeda in the Arabian Peninsula, a powerful local affiliate of the global terror network.

Two armed men on a motorbike opened fire at Colonel Abdul Razak al-Jabali, head of training at military police, killing him as he walked to work along Airport Road, a Yemeni official said on condition of anonymity.

Another officer, Fares al-Suwaydi, who worked in security at Sanaa airport, was shot dead in front of the terminal on Monday evening, also by gunmen on a motorbike.

And an intelligence officer died of wounds he sustained in an attack that killed a colleague earlier on Monday in the capital.

The latest attacks targeting security forces came after nearly 70 suspected Al-Qaeda militants were killed in a two-day air campaign by US drones and Yemeni warplanes.