Wednesday's top 5 headlines: What you need to know

Two people shot dead on UCLA campus — Two people were killed in a shooting at UCLA on Wednesday morning the LAPD confirmed. The campus was placed on lockdown just after 10 a.m. as police searched for the gunman. EgyptAir Flight 804: 'Black box' signals detected — A French naval vessel has detected underwater signals from one of EgyptAir Flight 804's so-called black boxes. Bernie Sanders slams 'rigged' superdelegate system, calls it 'absurd' — "[Hillary] received over 400 super delegates supporting her before anyone else was in the race… That is an absurd system and together we are going to change that system," Sanders said in Santa Cruz. Police consider criminal charges after Cincinnati Zoo gorilla’s death — Authorities in Cincinnati are considering possible criminal charges following an incident at a local zoo last weekend that left a 17-year-old gorilla dead after a boy fell into its enclosure. Marilyn Monroe's stardom endures on her would-be 90th birthday — Monroe, one of the most iconic stars of Hollywood's golden age of cinema died of a drug overdose in 1962, aged 36.