{{A grenade attack at a public gathering in Arusha over the weekend claimed lives and left several people injured }} .
The attack was a second of its kind in a period of a month; the previous attack was on May 5, at a church compound in the outskirts of Arusha city, killing three worshipers.
Tanzanian government said political parties and politicians should be held accountable for the spate of bloody attacks.
The ruling party CCM and the main opposition Chadema are pointing fingers at one another, each alleging their rival is sponsoring terrorism and orchestrating violence.
While politicians blamed one another, the death toll in the Arusha attack rose to three yesterday, hospital officials told the Vice President Dr Mohamed Gharib Bilal.
{{NMG}}
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