**A string of explosions killed at least six people in the Shia holy city of Najaf, Iraqi officials have said.**The bombings were apparently the latest in a series of attacks targeting Shia Muslims in the country.
Earlier in February another set of co-ordinated bombs killed at least 13 people in the run up to a key festival in the city of Karbala.
The government has blamed Baathist militias for the attacks, also claimed by al-Qaeda affiliated organisations.
The three blasts went off in quick succession on the road into the city, a major destination for Shia pilgrims, local officials said.
Scores of people were reportedly injured in the blasts.
With elections scheduled for March, there are fears of increased sectarian violence in Iraq, correspondents say.