<sod >The father-of-three stabbed PC Keith Palmer to death with two knives outside parliament after killing mother-of-two Aysha Frade and US tourist Kurt Cochran as he ploughed along a crowded pavement on Westminster Bridge.< eod>< sod > The jihadist stabbed Pc Keith Palmer to death with two knives outside parliament after killing mother-of-two Aysha Frade, pensioner Leslie Rhodes and US tourist Kurt Cochran as he ploughed along a crowded pavement on Westminster Bridge.< eod>