Read the sentence to find out whether there is any error in it. The error, if any, will be in one part of the sentence. The number of that part is the answer. If there is no error, the answer is (5). Ignore errors of punctuation, if any.
The police finally (1)/ catched up with (2)/ the notorious robber who (3)/ had escaped from jail. (4)/ No error(5).