They likely will but only after investigating
Which could include
1. If there is a mishap - what is the nature of it and any details of souls onboard. Then they will inform the next of kin FIRST before letting the public know ANYTHING.
Imagine what would be going on in the minds of the families of these people right now and the proverbial goats which are Pakistani public are too busy forwarding all sorts of masala.
2.If there there isn’t a mishap - where the rumor originated from and who began it?
What if they were all ok but due to the news a family member of the alleged affected has some medical issue or in incident? Who is to blame? The dipshit people of Pakistan?