Chinese state media say there have been explosions near several government buildings in the eastern province of Jiangxi.
Initial reports said a number of people were injured in the blasts, in the city of Fuzhou.
Unconfirmed reports say car bombs were detonated outside the offices of the state prosecutor and at least one other official building.
The cause and perpetrators of the blasts remain unknown.
Jiangxi traffic radio said two cars exploded within a short time of each other.
China’s state news agency Xinhua quoted witnesses saying that nearby buildings’ windows were broken, one car destroyed and 10 others damaged.
They said ambulances had arrived to take several injured people to hospital.
Earlier this month, dozens of people were injured in in a petrol bomb attack on a bank, by a disgruntled former employee, in north-west Gansu province.
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