Four aftershocks have been reported after a magnitude 6.4 earthquake hit India's northeastern state of Assam on Wednesday, according to local government.

Tremors were felt in the entire state and reports said panic-stricken people rushed out of houses and buildings to gather in open streets.

There were reports of cracks in the walls and floors of some structures, but no reports of immediate casualties, a local official said. 

"Big earthquake hits Assam. I pray for the well-being of all and urge everyone to stay alert. Taking updates from all districts," Assam Chief Minister Sarbananda Sonowal said. "Prime Minister Narendra Modi has taken stock of the damage due to the earthquake over the phone with me and has assured all support to Assam."

According to India's National Center for Seismology (NCS), an earthquake measuring 6.4 on the Richter scale occurred at 7:51 a.m. local time, followed by four aftershocks measuring 4.7, 4.0, 3.6 and 3.6 respectively.

The epicenter of the earthquake was located at 26.69 degrees north latitude and 92.36 degrees east longitude, with a depth of 17 kilometers, NCS said.

(With input from Xinhua)

(Cover: A man searches for his belongings amid debris after a boundary wall of his house collapsed following an earthquake in Nagaon district in the northeastern state of Assam, India, April 28, 2021. /Reuters)