Jakarta, July 17 (DPA) Two powerful explosions hit the JW Marriott and Ritz Carlton hotels in the Indonesian capital Friday morning, killing at least six people and injuring dozens of others, police and media reports said.

Jakarta police spokesman Chrysnanda said six people were confirmed dead in the apparent attack, but media reports put the death toll at eight, including four foreigners.

Chrysnanda feared the death toll could rise as many of the wounded people were in a serious condition.

Media reports said at least 29 people were injured in the blasts and were taken to nearby hospitals.

Chrysnanda also confirmed that the blasts came from bombs, but he did not give more details of the explosions. 'Investigation is under way by bomb experts,' he said.

The first explosion hit the Ritz-Carlton, completely destroying its facade, and the second blast hit the nearby Marriott hotel.

A witness said the explosions were about five minutes apart.