The Syrian Arab Red Crescent estimates that 2.5 million people are internally displaced within Syria by civil war, doubling the previous figure of 1.2 million used by aid agencies, the United Nations refugee agency said on Tuesday.
"The figure they are using is 2.5 million. If anything, they believe it could be more, this is a very conservative estimate," Melissa Fleming, chief spokeswoman of the UN High Commissioner for Refugees (UNHCR), told a news briefing in Geneva.
"So people are moving, really on the run, hiding. They are difficult to count and access," she said.
Also on Tuesday, a Syrian jet bombed a rebel-held region near the border with Turkey for a second day, killing at least one person and wounding three others, an official said.
An Associated Press video journalist saw the jet strike an area around the Syrian town of Ras al-Ayn, just across the border from the Turkish town of Ceylanpinar, and plumes of smoke could be seen rising into the sky.
The jet struck an area near the Turkish border "five times within a period of 10 minutes," according to an official from the Ceylanpinar mayor's office. He spoke on condition of anonymity because he was not authorized to speak to reporters. Turkish ambulances scurried to the border to carry Syrians wounded in the attack to Turkish hospitals.
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