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An assassination site in capital Sanaa by suicide bomber. © www.article.wn.com
Masked men shot dead Ahmed Muhammed Daghsan in the al-Hasaba area to the north of the capital one hour before Friday prayers.
Assailants were riding a motorcycle and got away. Daghsan, 45-year old, is said to be an arms dealer from Saada province.
Investigators say the motive behind the killing is yet to unknown.
Yemen has seen a series of successful assassinations by masked men on motorcycles of senior military and security leaders amid a security breakdown.
The government has blamed Yemen based al-Qaeda for many of the attempts, but the group has remained silent.