A car bomb had also exploded along a toll road in North Jakarta, police said. Indonesia’s Metro TV said two people had been killed. No further details on that blast were available.

The bomb attacks, the first in several years, could badly dent investor confidence in Southeast Asia’s biggest economy. The Indonesian government has made considerable progress in tackling security threats from militant Islamic groups in recent years, bringing a sense of greater political stability to the country.

Indonesia’s parliamentary elections in April and presidential elections earlier this month both passed peacefully, underscoring the progress made by the world’s most populous Muslim nation since the chaos and violence that surrounded the downfall of ex-autocrat Suharto in the late 1990s.

“After the elections going off so peacefully, the bomb blasts have come as a shock. Investors will be keeping a close eye on this one,” said Singapore-based HSBC economist Prakriti Sofat.

Windows were shattered at both hotels, which are close to each other in the Kuningan business area which is popular with foreigners and Indonesians, with many bars, offices and embassies.

Hundreds of police, some soldiers and ambulances were at the scene of the hotel attacks. A Reuters witness said about 100 foreign and Indonesian hotel guests and office workers were gathered outside, some still wearing bathrobes.

The windows in the first floor of the Ritz-Carlton were blown out, indicating the blast may have been in the restaurant, which would have been busy at that time of the morning.

The Marriott was badly damaged by a car bomb attack in 2003 that killed 12 people.

Police said foreigners were among the dead on Friday. Tim Mackay, president director of cement maker PT Holcim Indonesia, was killed in the attacks, the company said.

Indonesian financial markets fell after the blasts, with the rupiah down 0.7 percent at 10,200 per dollar, prompting state banks to sell dollars to support the currency, traders said. Indonesian stocks were down around 2 percent.

“I fell because of an explosion, I did not know where it came from, but after I saw clearly it came from the left side of the JW Marriott Hotel,” said Yanuar, an employee at the Marriott.

TV footage showed a wounded man being carried out on a stretcher with an oxygen mask attached to his face.

MANCHESTER UNITED WAS TO STAY AT RITZ

Lydia Ruddy, a witness who lives in the area, said she heard an explosion and saw smoke coming from the Marriott, followed five minutes later by another explosion at the Ritz-Carlton.

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