At least six people have been killed and more than 50 hurt in a suicide bomb attack in Bangladesh, officials say.
A survivor is treated for his injuries
The blast took place in a busy street in the northern town of Netrakona, as police examined a suspicious package.
The attack, apparently carried out by two men on a bicycle, occurred outside the office of a secular cultural group.
Bangladesh has been hit by a series of bombs in recent months blamed on Islamic extremists. At least 12 people were killed last week.
Police at the scene of Thursday's attack say two men rode up on a bicycle and dropped a package on the street.
One bomber died, the other was injured, police say.
Eyewitnesses say a big crowd had collected to watch the police examine the package thought to contain a bomb, when the explosion took place.
"It was a terrible sight. People were screaming in pain all around," the Associated Press quoted a local journalist, Shymolendu Pal, as saying.
The wounded were taken to nearby hospitals where the condition of some was said to be serious.
Last month, a powerful bomb exploded inside a library near a courthouse in Gazipur, leaving seven people dead and about 50 others injured - police described it as the country's first ever suicide bombing.
In a second attack on the same day, two policemen were killed in a bomb attack outside a courthouse in the port city of Chittagong.
Two days later one person died in another bomb attack in Gazipur.
The government blamed a banned militant group, Jamaat-ul-Mujahideen, for the explosions and a series of earlier attacks.
More than 400 people have been arrested but the BBC's Roland Buerk in Dhaka says the masterminds remain at large.
The Jamaat-ul-Mujahideen wants to establish Islamic law in Bangladesh.