Nguyen Xuan Anh, head of the Institute of Geophysics, said there was an earthquake with a 5.4 magnitude at around 8:37 a.m. at the China-Myanmar border, with the epicenter located around 48 km underground.
People in apartment buildings in Hoang Mai, Cau Giay and Thanh Xuan districts reported feeling dizzy and seeing objects shake and move.
Nguyen Duc, who lives on the 16th floor of the CT13B apartment building on Vo Chi Cong Street, Tay Ho District said he felt "dizzy, as if I was drunk" and that the lights installed on the ceilings shook for around two minutes.
The earthquake happened around 660 km away from Hanoi. The institute is still monitoring it.