Tuesday's top 5 headlines: what you need to know A senior French police officer and his partner were killed in a nighttime attack by a knife-wielding man in a distant suburb of Paris on Monday.<br />The attacker was also killed, while a young boy was rescued from the scene.<br />Authorities are considering criminal charges against Orlando gunman Omar Mateen’s wife, Noor Salman, who failed to talk the deranged man out of carrying out the attack.<br />The gunman who killed 49 people in an attack on a gay nightclub in Orlando is said to have been a regular at the venue and had messaged several people on gay dating apps.<br />A hostage-taker in Amarillo, Texas was shot dead following a scary situation at a Walmart Tuesday afternoon.<br />Apple WWDC 2016 shows upgrades to iMessage with new features including disappearing ink messages and fireworks that take up the full screen.