As of Thursday, the death toll across the country from the earthquake has risen to 3,145, with 4,589 others injured and 221 missing, Xinhua news agency reported, quoting the Myanmar Radio and Television.

The magnitude 7.7 quake Friday rocked an impoverished Southeast Asian nation already beleaguered by years of civil war.

Myanmar's military rulers have kept journalists out since the devastating earthquake, so CBS News' partners at the BBC went undercover to reveal the scale of the disaster.

A 21-year-old shopkeeper with little money of her own, Ei Hay Mar Hlaing has delivered more help to victims at the epicentre of Myanmar's devastating earthquake than most national or international aid organisations.

After a 7.7 magnitude shook Myanmar on Friday (March 28), killing more than 2,800 people, international rescuers rushed into the devastated Southeast Asian country.