What we ve learned tonight about the suspect, and here s abc s kaylee hartung. reporter: tonight, the man seen here tackling dave chappelle at the hollywood bowl venue in los angeles is in custody. 23-year-old isaiah lee is being held on suspicion of assault with a deadly weapon. authorities say he was carrying this replica handgun with a knife blade. tmz video shows the assailant climbing on stage and attacking chappelle in the middle of his set. subject s wearing a black hat, blue flannel, grey pants. reporter: lee then continues to run behind a screen, where he was swarmed by the venue s security. chappelle telling the crowd that the suspect was being stomped. the attacker was later taken to the hospital with injuries. moments later, chris rock, who also performed at the netflix is a joke: the festival, joining chappelle. was that will smith? reporter: rock referencing the infamous slap that occurred at the oscars. also among the star-studded crowd, jamie foxx, who rus