At least four people were killed and two others seriously injured in a road mishap near the Indian capital Tuesday, a senior police official said. "The mishap happened when a car in which the victims were traveling rammed into a stationary canter at Rabupur on the Yamuna Expressway in Greater Noida on the outskirts of the national capital. While four died on the spot, those injured have been admitted to a local hospital by passersby," he said, on condition of anonymity. The victims were returning from the tourist town of Agra in the northern state of Uttar Pradesh when the mishap happened. A probe has been ordered into the incident, the official added.