Narrative:

I cleared aircraft Y for takeoff on runway 24L. Aircraft X was rolling out on runway 24R. I took care of other things; and next thing I observed was aircraft X about to cross the runway while aircraft Y was rolling one third down the runway. I yelled out 'aircraft X stop' 'aircraft X hold' then I instructed aircraft Y to abort and cancel take off clearance. I did not cross aircraft X; I had not expected aircraft X to cross the runway. I expected all aircraft to hold short of the parallel runway; since there is enough space to clear the runway they just landed.aircraft Y had to sit on the runway for about 10 minutes to check his aircraft (with help of rescue department) and taxied off the runway on his own. We need the center taxiway between runway 24L and runway 24R. Better educate foreign pilots to what they can and cannot do after landing.

Google
 

Original NASA ASRS Text

Title: LAX Tower Controller reported of a runway incursion involving a foreign carrier. Controller had cleared an aircraft for departure while landing foreign carrier was rolling out on parallel runway. Aircraft did not stop on taxiway between the runways. Controller advised aircraft to stop. Controller told departing aircraft to abort and cancel takeoff clearance.

Narrative: I cleared Aircraft Y for takeoff on Runway 24L. Aircraft X was rolling out on Runway 24R. I took care of other things; and next thing I observed was Aircraft X about to cross the runway while Aircraft Y was rolling one third down the runway. I yelled out 'Aircraft X stop' 'Aircraft X hold' then I instructed Aircraft Y to abort and cancel take off clearance. I did not cross Aircraft X; I had not expected Aircraft X to cross the runway. I expected all aircraft to hold short of the parallel runway; since there is enough space to clear the runway they just landed.Aircraft Y had to sit on the runway for about 10 minutes to check his aircraft (with help of rescue department) and taxied off the runway on his own. We need the center taxiway between Runway 24L and Runway 24R. Better educate foreign pilots to what they can and cannot do after landing.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.