A 23-year-old man's body was discovered in an open field after he was stabbed to death in Mitchells Plain, Cape Town, on Monday.Police responded to a complaint about the discovery of the body near Durban Road, Portlands, at 11:45."The deceased had been stabbed in the chest with an unknown sharp object," police spokesperson Captain FC van Wyk said."No persons have been arrested. Police are investigating a murder."Anyone with information about the incident is asked to contact the investigating officer Detective Sergeant Errol Bedford of Mitchells Plain serious and violent crimes unit at 082 777 8076.