By Mohammed Amin

KHARTOUM, Sudan

A Sudanese protester was killed and another injured in protests in capital Khartoum on Sunday, doctors said.

"A protester Abubakr Youssef, 62, has died due to suffocation by tear gas used by the police to repress protests,” a doctors committee said in a statement.

Eyewitnesses said that hundreds of people have staged a protest in Bahri, the twin city of Khartoum.

Sudan has been rocked by popular protests for the last two months, with demonstrators decrying President Omar al-Bashir’s failure to remedy the country’s longstanding economic woes.

Sudanese officials say around 31 people have been killed since the protests began, although the opposition puts the number at closer to 50.

A nation of 40 million people, Sudan has struggled to recover from the loss of three quarters of its oil output -- its main source of foreign currency -- when South Sudan seceded in 2011.