"On Saturday, a senior law enforcement official told Fox News that the laptop contained "five digits," or at least 10,000, emails of interest to investigators.
The source also told Fox News that law enforcement officials think it's highly unlikely that all of the newfound emails are duplicates, as the Clinton campaign has suggested."
http://www.foxnews.com/politics/2016/10/30/abedin-reportedly-pleads-ignorance-how-tens-thousands-emails-got-on-computer.html