clear security flow statistics

Hi all,

For instance when you do the folllowing, it is shown when interface statistics was cleared or Never cleared..

show interfaces ge-0/0/0 extensive | match clear
Statistics last cleared: Never

How about ">clear security flow statistics"? We need to see when the flow statistics was cleared? Seeking associated log on "clear security flow statistics" couldn't help. I didn't see this from all  >show log interactive-commands.X.gz 

Any ideas?