Officials in Bangladesh have warned of more attacks on government sites by Islamic militants blamed for a recent wave of bombings.
Police in northeastern Sylhet district say they received a letter purportedly from the outlawed Jamaat-ul-Mujahedeen, threatening fresh attacks.
The group is blamed for detonating some 400 bombs in August in an effort to press for the introduction of Sharia-based Islamic rule in Bangladesh. Two people died in the attacks, and 100 others were wounded.
Meanwhile, officials said a local leader of the country's ruling party died in a bomb attack in the southwestern city of Kulna. There was no immediate claim of responsibility for the attack Sunday that killed Mizanur Rahman Bablu of the Bangladesh Nationalist Party.
Earlier this month, militants killed two people in bomb attacks at court buildings outside Dhaka.