GameStop CEO Michael K. Mauler steps down abruptly

GameStop CEO Michael K. Mauler has resigned abruptly after just three months on the job. 

The company cited "personal reasons" for Mauler's resignation, which is effective immediately.

Daniel DeMatteo, a co-founder of the video game and consumer electronics company, will be the interim CEO. DeMatteo has been with the company since 1996 and has served in a number of executive roles, including CEO.

This is a developing story...