Jason Levien has stepped down from his position as CEO of the Memphis Grizzlies.

Levien's resignation appears to be in response to the dismissal of assistant GM Stu Lash.

Levien joined the Grizzlies in November of 2012.

Levien is a former player agent, though he joined the Sacramento Kings' front office in 2008 and stepped down in 2010.

The future of Dave Joerger and John Hollinger is unclear due to the apparent clash between current ownership and Robert Pera.

Chris Wallace will assume responsibility for the front office on an interim basis.

David Mncberg, general counsel of the Grizzlies, has long been rumored to want more decision-making power, according to Zach Lowe.

A source tells Marc J. Spears that Levien and Pera had been at odds for over a year.