An earthquake of 7.7 magnitude rattled Indonesian province of Gorontalo early today, forcing local residents to rush outdoors.

The epicenter of the quake, which struck at 01:02 am local time, was located 138 km northwest of Gorontalo city in a depth of 10 km, local meteorology and geophysics station said.

The tremble forced thousands of people, including hotel guests, to rush outdoors.

There was no immediate report of casualty or material damage.