Residents objecting to an agricultural development in the Sudanese capital clashed with police on Friday leaving some people injured, both sides said.
About 400 demonstrators blocked the main street and set tyres alight after weekly prayers in the Om Doum neighbourhood along the Blue Nile River in east Khartoum, residents said.
"They feel this land belongs to their area but the government gave it to Gulf investors for agricultural projects," one resident told AFP.
Riot police responded with tear gas and beatings while the protesters fought back with stones, residents said, adding there were many injuries.
Police confirmed the residents objected to an agricultural project in the area.
"They blocked the main road and burned tyres and attacked a police station, stoning officers," police said in a statement reported by the Sudanese Media Centre, which is close to the security apparatus.
Both police and civilians were injured in the clash, it said.
"Police controlled the situation, arrested some and charged them for disturbance," the statement added.
Sudan has been seeking alternate revenue sources after losing most of its export earnings when South Sudan split two years ago with roughly 75 percent of the country's oil production.