Random shutdown of Olimex Lime 2 emmc rev.K. Can we know the reason for Shutdown?

[Tejas SJ]

I am using Olimex Lime 2 Emmc Rev.k for a project. One of the Boards shuts down randomly.

 

Its not a freeze or a sudden power down of the board.  The board undergoes a complete shut down procedure. 

 

I checked the log entries in /var/log/syslog log file. There is a entry of board going to shut down but I couldn't find the reason for shut down. 

 

 Is there a way to find out if the board got shut down because of the Power-button press, shutdown command from a SSH client, shutdown because of temperature or shutdown because of under voltage ? Is there a log file i can check to find the reason for shutdown?