Executive shakeups continue at Motorola as the company announced that its top marketing officer Kenneth “Casey” Keller has left the company. Motorola said the company will not directly replace Keller, who started with the handset maker in 2006.

Keller’s former deputies, Eduardo Conrado and Jeremy Dale, will now report to division presidents. Dale oversees marketing and communications for the company’s mobile devices unit, while Conrado is in charge of marketing for the rest of the company’s products. Dale will now report to CEO Greg Brown, who replaced Stu Reed as head of mobile division, while the company searches for a replacement.

At an investor conference earlier this week, Brown reportedly said that product marketing was an area that the company needed to strengthen.