Mumbai serial blasts the 4th bombing to occur on a 13th in 3 years

The jinx associated with number '13' seems to hold true for the country with four bomb blasts taking place on this date during the last three years.

Mumbai's diamond district Zaveri Bazaar and two other bustling markets Opera and Dadar were today hit by three consecutive blasts, killing at least 13 and injuring about 100.

On February 13 last year, 17 people were killed and over 60 injured when the famous German Bakery in Pune was hit by a bomb blast. The bakery which was frequented by foreigners came under attack a day before Valentine's Day when young crowd throng the eatery.

In May 13, 2008, Jaipur was hit by a series of nine synchronised bomb blasts within 15 minutes across different locations of the 'Pink City'.

The blasts -- first terror attack on this tourist destination -- killed 68 people and injured over 214.

Same year on September 13, six blasts took place in the national capital killing 26 people. The blasts took place in crowded markets of Karol Bagh, Connaught Place and Greater Kailash.

All these blasts save one, the German Bakery, have some common points -- all these bombs were synchronised and timed to explode within a very short span of time, crowded markets were the targets and the blasts occurred in evening when these places swell with customers.