the probe expanded to include kelley 's copious communications with the top u.s. commander in afghanistan , marine gen. john allen .
 
we do n't have all file pool - in this july 9 , 2011 file photo , usmc gen. john allen , left , and army gen. david petraeus , top u.s. commander in afghanistan and incoming cia director , greet former cia director and new u.s .... ( associated press ) file pool - in this july 9 , 2011 file photo , usmc gen. john allen , left , and army gen. david petraeus , top u.s. commander in afghanistan and incoming cia director , greet former cia director and new u.s .... ( associated press ) former cia director david petraeus will testify before the house intelligence committee friday on events that led to the death of the u.s. ambassador and three other americans in an attack on the u.s. consulate at benghazi , libya , on sept. 11 .
the liaison was discovered during an fbi investigation of harassing emails allegedly saw kelley .
 
the affair between the married former military man and his married biographer , paula broadwell , ended about four months ago , mansoor said .
 
 
petraeus resigned from the cia last week after acknowledging an extramarital affair .