Corroborating evidence is evidence that strengthens the weight of primary evidence presented in a trial. Each piece of related evidence that comes after the first primary piece can be referred to as corroborating evidence. In short, corroborating evidence helps to confirm what the primary evidence seeks to prove.
Corroborating evidence is relied on to validate evidence given regarding any criminal case. It is important for a prosecutor to obtain corroborating evidence. It can be very difficult to prove certain types of allegations without corroborating evidence.