A series of violent incidents in Tarzana has left one man critically wounded and a 19-year-old injured. Witnesses at the shooting scene have been uncooperative with authorities, complicating investigations. In a separate case, a teenager was shot inside a home during a robbery attempt, leading to an arrest of a suspect. The same 19-year-old victim was also assaulted by four suspects earlier in the San Fernando Valley, underscoring a troubling trend of escalating violence in the area.