Hi Kranthi,
There are some methods which already been suggested to you by Sharma & Michael to know who released the TR .The simple & best way is just go with SE01 --->provide your TR number ---> Click on Action logs. (Check are you able to get logs for your particular TR )
On the other end PRD ,you can directly go to STMS_IMPORT ---> Request --> Owner or Logs.Here you can also get complete details of your TR.
If you've table view authorizations please go with E070 table for the details.
Regards,
Gaurav