1.   But a strong current hampered their work and police said there could be more people trapped in the wreckage.

2.   The official Antara news agency quoted a local government official as saying strong currents were hampering search efforts.

3.   A strong current has hampered the search.

4.   Strong currents are hampering efforts to recover the cockpit voice recorder of an Indonesian airliner which crashed into a shallow river in bad weather, an official said Friday.