Getting Machine name from where stored procedure was last executed

Is there any way to find out machine IP or machine name from where a particular stored procedure is executed in SQL Server 2005?

We have a client server architecture with .NET as a front end and SQL Server 2005 as back end. Someone in production environment has executed one stored procedure & deleted critical data from .NET application. We are unable to deduce who has done this.

We know the exact time when this has happened. Is there any way we can find the all the connection in SQL Server at that time, so that we can find out machine name from logged connection?