Ernst and Dina Marais had driven some 1,100 miles from their retirement village on the Western Cape coast for a safari holiday at the country's top nature reserve.

The victims, believed to be a 71-year-old man and wife, were allegedly stabbed to death.

An urgent investigation is underway following the tragic discovery of an elderly couple's bodies in a river at Kruger National Park, prompting concerns over a possible hijacking.