Perdiccas was assassinated while marching against Ptolemy I, the satrap of Egypt. He was replaced as regent by Antipater.
Citation:
Bouchard, Elsa. "Death of Perdiccas".
The Literary Encyclopedia. First published 01 March 2010
[http://www.litencyc.com/php/stopics.php?rec=true&UID=11295, accessed 20 May 2013.]