Rebels and the Syrian government both claim to control most of Qusayr . Rebel activists report intense shelling , hundreds of deaths . The strategically important town has been under rebel control for months . The government accuses rebel fighters from southern Lebanon of joining Syrian troops .
Rebels and the Syrian government both claim to control parts of Qusayr . Opposition activists report intense shelling , hundreds of injuries . The strategically important city has been under rebel control for months . The opposition accuses Hezbollah fighters from neighboring Lebanon of joining Syrian troops .