Taiwan was hit by a series of at least 10 earthquakes of varying magnitude in the early hours today, with the strongest reaching 6.1 magnitude.

According to the island’s Central Weather Administration, the earthquakes occurred around 40 kilometers from Hualien City on the east coast, at a depth of 18.9 kilometers.

Taiwan’s National Fire Agency said there were no immediate reports of damage. Media reports said, no tsunami warning reports followed the earthquakes, which triggered mobile phone alarms in capital Taipei, and came just several days after dozens of quakes shook the island. The government said they were aftershocks from a deadly 7.4 magnitude quake that hit the island more than two weeks ago, which Taiwan said was the strongest in 25 years. At least 17 people were killed after the quake triggered landslides that blocked roads and severely damaged buildings around the main Hualien city.