An undersea earthquake rocked East Timor's coastal capital Saturday, shaking buildings and sending screaming residents running into the streets.

There were no immediate reports of injuries or damage from the magnitude 6.4 tremor, according to a witness and meteorological agencies.

The U.S. Geological Survey put the tremor at a magnitude 6.0, while the Indonesian Meteorological and Geophysics Agency registered a more powerful 6.4.

The agencies said it struck 55 miles north of the capital, Dili, at a depth of 7 miles.

"The tremor was very strong and shook everything in my house," said Ruben Ximenes, a technician for the United Nations. "All I could do was run away."

Women and children were screaming and some people used bamboo drums to sound the alarm, he said.

No tsunami alert was issued following the quake.

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