Indonesia Earthquake
USGS map showing the earthquake location

A strong earthquake measuring 6.4 on the Richter scale struck the west coast of Indonesia's Sumatra Island early Wednesday, according to U.S. Geological Survey.

The tremor at a depth of 22 kilometer (13.7 miles) struck Indonesia at around 07.30 am (00:30 GMT) at epicenter. 

One man died of shock while rushing out of his home on Simeulue Regency, which is 150 kilometer off the west of Sumatra. Simeulue has a population of about 80,279.

"A man on Simeulue died of shock. He had a history of high blood pressure and was rushing out of his home when he collapsed and died," National Disaster Agency spokesman Sutopo Purwo Nugroh said.

However, there were no immediate reports of major damage or casualty.

According to USGS, the quake was centered at 28 kilometers (17 miles) northwest of Aceh province's Sinabang town, 164 kilometers (101 miles) south of Meulaboh and 260 kilometer (161 miles) West of Kabanjahe, Indonesia.

Although the quake was strong, there was a little chance of tsunami.

"The quake has no tsunami potential," Nugroho said, adding that "Some people ran away from their houses. We don't have any house damage."

Earlier, the USGS reported that a quake measuring 6.6 on the richer scale rocked Indonesia, but later it downgraded to 6.4 magnitudes. Indonesia's meteorology agency also reported 6.4 magnitude.

According to Hawaii-based Pacific Tsunami Warning Center, there was no threat of a widespread, destructive tsunami after the tremor, about 330 km (205 miles) southeast of Indonesia's Banda Aceh, Reuters reported.