BBC News with Sue Montgomery.

Shares in the micro-blogging site Twitter have nearly doubled in value, amides strong demand in the first few hours of trading on the New York's stock exchange. The share price rose above $45, valuing the company at more than $25bn. Mark Gregory reports. “It would go down as one of the most spectacular debuts in the history of financial markets. Twitter was only being around seven years, has never made a profit and has a modest source of income, yet it(s) shares rose 80% in value, the moment it joins the stock market and then briefly soared even higher than that. Measured by the stock price in relation to revenues, Twitter shares are now rated as among the most expensive of any new share issue ever.”

The Pakistani Taliban says they've chosen Mullah Fazlullah as their new leader, the man whose fighters were responsible for the shooting of a school girl Malala Yousafzai. The militants say he rejects the idea of peace talks with the government and wants to revenge the killing of his predecessor, Hakimullah Mehsud in an American drone strike. The commander came to prominence six years ago when his forces seized control of Swat Valley in northwest Pakistan where he imposed a harsh form of Sharia or Islamic law.

Nearly 30,000 foreign workers have been rounded up in Saudi Arabia since a deadline for recognizing their status run out on Sunday. Many restaurants, laundries and other small businesses are closed as foreign workers stayed at home to avoid police raids. Here's Sebastian Usher. “Photos posted online showed dozens of migrant workers seated on the ground after being picked up by the police. They've been given half a year to make their status legal in line with more stringent labour laws. A senior Indonesian official told the BBC his country was preparing to fly out nearly 8,000 nationals. He said some had lived in Saudi Arabia for 30 years or more. The majority had run away from their original employers. They are banned from returning for at least five years.”