By Tim FangThe FBI has joined the investigation and is offering a reward for information into the deadly shooting at a birthday party in Morgan Hill last month, authorities said. The FBI is also offering a $20,000 reward in the case. Hundreds of people were at the scene for a pop-up-style birthday party for a Twitch streamer announced on social media. “We’ve asked for the FBI’s assistance, and we are calling on our community to help identify those responsible for this heinous crime. The FBI is asking anyone with information about the shooting, or who may have captured photos, videos, or other content that could be relevant to the investigation to visit https://www.fbi.gov/morganhillshooting.