Two earthquakes struck off the northeastern coast of Taiwan Thursday morning, the U.S. Geological Survey said.
The first, a preliminary magnitude-5.6 quake about 8 miles northeast of Su'ao, struck at a depth of 6 miles at around 11:17 a.m., the USGS said.
It was followed by a magnitude 5.5-magnitude earthquake around 13 miles east-northeast of Su'ao a little more than an hour later, according to the USGS. The second temblor was also recorded at a depth of around 6 miles.
There were no immediate reports of injuries or collapsed buildings, according to Reuters. Tremors were reportedly felt in the capital of Taipei.
In February, A magnitude-6.4 earthquake struck Tainan, a city on the country's southwestern coast. That earthquake toppled buildings and killed more than 100 people. Most of those killed were found at the ruins of a residential complex that collapsed.
Earthquakes frequently strike Taiwan, but usually cause little or no damage, particularly since more stringent building regulations were introduced following a magnitude-7.6 quake in 1999 that killed more than 2,300, The Associated Press reported at the time of February's quake.