Today, approx. $1.2m of damage was caused and 17 people taken to hospital (5 in critical condition) when a bomb exploded in a busy residential city street.
At around 2:12pm, police recieved a call relating to a likely bomb threat due to take place within an hour. The target was a popular cafe opposite one of the city's main hotels, which in mid-afternoon was likely to include around 300 civilians in the bomb blast. With this information, the police immediately responded to set up an exclusion zone. On approach, the first responding unit (K9 patrol) noticed a suspect person leaving the scene and attempted to stop him. Unfortunately the officer was shot in this confrontation. The suspect was then shot by backup officers, but the suspect was actually concealing a powerful bomb on his person which detonated at this point, instantly killing him.

The resulting explosion threw the emergency services into chaos. After the explosion, the event was reclassified to "major catastrophe". Following is the official list of dispatched units (not including units that responded of their own free will):
Fire Department:
Police:
1 X Crime Scene Investigation
Ambulance:
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This one was a genuine in-game event. I was responding to a bomb call, and trying to arrest the bomber when he shot my officer, then as the backup arrived and shot the suspect, there was a gas explosion right underneath them all

So basically I had to deal with two bombs at once. What fun!
Oh and the responding vehicles list is accurate, if you're wondering

The queue of cars went about 200 metres haha.