A series of explosions has rocked an opposition party rally in the Bangladesh capital, Dhaka, killing at least four people.
There were seven or eight blasts at the Awami League headquarters, as leader Sheikh Hasina addressed a crowd.
Ms Hasina, a former prime minister, was not hurt, but many people were injured.
The attack is the latest in a series of blasts in Bangladesh this year, including one which killed an Awami League leader in the town of Sylhet.
‘Crying for help’
Early reports of casualties vary widely, with unconfirmed claims of 10 dead and hundreds injured.
Sheikh Hasina was addressing a crowd when the blasts happened
Witnesses said many of those hurt were badly wounded.
“People were covered with blood, many injured were crying for help,” rickshaw driver Mohamad Yasin was quoted as saying by the Associated Press news agency.
Rafiqur Rahman, a Reuters news cameraman at the scene, said there was panic.
“I heard several blasts and people were just fleeing.”
He said many of those injured were women.
There has been no claim yet of responsibility.
The BBC’s Roland Buerk in Dhaka says police believe hand grenades went off in the crowd.
He says the scene was chaotic, as angry League supporters set fire to buildings and cars and were beaten back by police with batons.
Our correspondent says the rally had been called to protest against the attack in Sylhet in May.
Awami League General Secretary Abdul Jalil condemned the blasts, which he said targeted Ms Hasina, Associated Press reported.