Bangladeshi authorities ordered extra police and paramilitary forces to patrol major towns and cities ahead of an opposition strike on Saturday called to protest a series of bombings this week.
More than 100 near-simultaneous bombings occurred nationwide on Wednesday, killing 2 people and wounding 125 others, police and media reports said.
Also read : Blasts rock Bangladesh
Police hunted for more suspects on Friday and interrogated more than 100 people - including several suspected members of a banned Islamic group - who were detained across Bangladesh since the attacks.
No one claimed responsibility, but leaflets from the banned Islamic group Jumatul Mujahedin were found at all of the blast locations, officials said.
