I hope that you have got Auditing universe available for reporting on the Auditing data. Or you can get it from here - http://scn.sap.com/docs/DOC-53904
With the auditing universe, you can query the data in auditing database to see the events that happened around at that time of issue. Based on the level of auditing data that is being captured, you could see the activities along with the user involved and the client ip addresses from where the events were triggered.
Kind Regards
Mohan