The title compound, C(7)H(6)BrN(3), crystallizes with three independent mol-ecules in the asymmetric unit. The mol-ecules are approximately planar (r.m.s. deviations for all non-H atoms = 0.016, 0.023 and 0.024 Å). The primary amine groups show pyramidal coordination. In the crystal, adjacent mol-ecules are linked by N-H⋯N hydrogen bonds. For two independent mol-ecules, the amine groups are hydrogen-bond donors via one H atom to one acceptor atom, whereas for the third independent mol-ecule, the amine group is a hydrogen-bond donor to two acceptor atoms.