The bomb exploded at a checkpoint in the small central town of Beledweyne, some 325 kilometres (200 miles) north of the capital Mogadishu, where last month Al-Qaeda-linked Shebab insurgents claimed responsibility for a bomb attack which ripped a hole in a passenger plane shortly after takeoff.
Militant group kills 30 in twin blasts in Somali town
"A laptop computer went off at the screening area, and the security forces have also managed to defuse two other explosive devices, one of them planted in a printer," Police Lieutenant Colonel Ali Dhuh Abdi told reporters. "Six people were wounded, two of them policemen."
The blast on Monday took place at a checking area where security screening is carried out before cargo and bags are loaded onto planes. The security checkpoint was manned by African Union troops from Djibouti as well as Somali government security forces.
Blast on Somalia airplane Tuesday 'was caused by bomb'
There was no immediate claim of responsibility for the attack.
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