The Yemeni counterterrorism unit has arrested four Al-Qaeda suspects who were believed to be involved in assassinations of military and security chiefs.

The arrests took place in the capital Sanaa amid a series of failed and successful plots to assassin key military and security chiefs in main cities including Sanaa.

In the past two days, suspected Al-Qaeda militants attacked two intelligence officers in Sanaa and in Hadramout killing the latter.

The raid on the suspects' house had been planned several days ago and occurred two days ago after the failed assassination attempt of the intelligence Captain in Sanaa.

The house is located in the Hadda area and the counterterrorism forces sized weapons and ammunition with the suspects.

Tens of Yemeni military and security officers, mostly intelligence officers, have been killed since the Yemeni army launched a US-backed offensive and drove Al-Qaeda militants out of their strongholds in the
south earlier this year.

The killings including those by suicide bombings occurred in main cities including the capital Sanaa which has seen the deadliest ever suicide bombings against military and security targets.