More than 3,000 customs officers in Kuwait went on strike today demanding better pay and working conditions, trade union officials said.

The indefinite strike could affect exports and imports, including oil exports, a report said.

Shipping and land freight was completely halted, while airport was partially affected, union officials said.

They warned that oil exports from Kuwait could be affected later in the day if the strike continued. All tankers carrying crude must receive clearance from customs to leave.

Workers had earlier rejected an offer by the customs chief to meet their demands if they called off the strike.