Jason West, co-founder of Respawn has reportedly left the company due to family issues. West, formerly the president of Infinity Ward, which he started up with Vince Zampella, launched Respawn with Zampella in 2010.
The pair were dismissed from Infinity Ward and subsequently became embroiled in lawsuits with Activision. They claimed they were unfairly let go whilst Activision asserted the pair had been secretly working with EA during their time at Infinity Ward. A settlement was eventually reached.
Respawn are currently working on an unnamed EA title, said to be a sci-fi shooter and have stated through Twitter that they will be appearing at E3.
West has reportedly been away from the company since last May.