When I was little in the 80s we stayed in a town called Shahjahanpur in UP it is about 80 km from Bareilly where the IAF base housed MIG 23 Foxbat planes and I remember them creating sonic booms over Shanjahanpur a few times. The sonic boom does not damage houses, it just rattled the windows.A sonic boom is plausible, 50 Km range for a sonic boom is also possible (if I am wrong do correct me). As for the ambulances, maybe there was some kind of building damage, and somebody got hurt. Sonic boom does damage buildings, etc. The only issue I have is why the internet has been shut down.