BANGKOK, Feb. 11 (Xinhua) -- Several bomb attacks rocked southern Thailand's Pattani Province on Sunday, injuring at least two, local media reported.

Two bombs went off Sunday morning near a school, injuring a 57-year-old woman and a district chief, the reports said.

Officials said both were pipe bombs.

Another two bombs exploded at the same time in another district of the province, causing no injuries, Nation TV said.

The two bombs were planted only 100 meters away from each other, one in a basket, the other hidden in a bike, the report said.

Suspicious objects were reported in other four spots in the same province. Police went to the scene and managed to defuse bombs at two spots.

The blasts are under investigation. Details of the attacks are not unveiled so far.