Chaudhry Zulfikar, the lead prosecutor, investigating the 2007 assassination of former Pakistani Prime Minister Benazir Bhutto, has been shot dead while leaving his home.
Mr Zulfikar was gunned down as he drove to court in the capital Islamabad, a female passerby was also killed during the attack, police said.
More top news
In an embarrassing setback for the president, Republicans failed to reach the number of votes to pass his new healthcare act into law.
It will feel pleasantly warm in the sunshine, with temperatures reaching 12 or 13 Celsius (54 to 55F).
Some of Britain's biggest stars of the stage and screen will be honoured at Buckingham Palace later today.