IT was St Valentine's day. A day marked out for the celebration of love, affection and universal bonhomie. Yet, the textile city of Coimbatore was destined for a riot of darker emotions. At 3.50 pm, just about 10 minutes before BJP leader L.K. Advani was to address a public meeting, a bomb went off at the cycle stand of the Coimbatore railway station killing six people. This was just the beginning of a series of bomb blasts which according to highly-placed sources have a distinct Dawood stamp. In fact, investigations have drawn several parallels between the 1992-93 Bombay blasts and the serial bombs in Coimbatore.