All of them have been reduced to ashes by Drona on the field of battle. The remnant were killed by Drona's son at night.
सर्वे हि भस्मसान्नीतास्ते द्रोणेन रणाजिरे. अवशिष्टाश्च निहता द्रोणपुत्रेण वै निशि॥