Bobby Brown leaves Houston funeral after a spat

Newark, New Jersey (CNN) -- Singer Bobby Brown made a brief and dramatic appearance at ex-wife Whitney Houston's memorial service on Saturday, leaving abruptly after being told that his entourage couldn't sit together, police sources told CNN.

He arrived with several people and was apparently emotionally distraught, with red eyes and head hanging as he walked up the aisle of the New Hope Baptist Church in Newark, New Jersey. He approached Houston's casket, passed it and went back down the aisle.

On CNN's live video feed, Brown was shown standing out front of the church soon after the service began. He was not seated with family, friends or other celebrities at the front of the church.