JAKARTA  A magnitude 6.1 earthquake struck off the shore of Indonesia's Java island on Friday, at a depth of 10km (6.21 miles), Indonesia's geophysics agency BKMG said.

The epicentre was located 132km north of Tuban in East Java province, the agency added.

The tremors were felt strongly in East Java, its capital Surabaya, as well as cities in neighbouring provinces, according to multiple postings by social media users in those areas.

The quake has no potential to trigger a tsunami, BMKG said.

There were no immediate reports of damage.

  - Reuters