A man holds a Union flag as he kneels near flowers layed at Potters Fields Park in London on June 5, 2017, during a vigil to commemorate the victims of the terror attack on London Bridge and at Borough Market that killed seven people on June 3. Pic/AFP

A Pakistani-origin man was among three knife-wielding militants responsible for carrying out the brutal London terror attack that killed seven people and injured 49, according to a media report. The man, identified as 'Abz' is believed to have been the ringleader of the trio that carried out the horror attack at two London landmarks, The Mirror reported.