JAKARTA, Indonesia - A strong earthquake caused tall buildings to sway in the Indonesian capital Wednesday, sending panicked residents fleeing to the streets just days after a deadly tsunami struck main island of Java.

There were no immediate reports of damage or casualties.

The 6.0-magnitude quake was centered 25 miles beneath the Sunda strait, the U.S. Geological Survey said on its Web site, and struck 90 miles southwest of Jakarta.

Suharjono, head of the earthquake division at Jakarta's meteorological agency, told Metro TV that based on the initial estimate of Wednesday's quake strength, it was not strong enough to trigger a tsunami.

But he urged people to be on guard.

On Monday, a tsunami triggered by a magnitude 7.7-earthquake slammed into Java's southern coast, killing more than 530 people. A series of strong aftershocks have rattled the region since then.