There is a leakage from my kitchen ceiling. The emergency plumber said it is from the flat above. The flat above my flat, switched off their main water more than 3 hours ago. But the water is still leaking from the ceiling. There are no signs of leakage or damp in upstairs flat.
Could there still be a problem with the pipes in upstairs flat?
Please help. Thank you.

Yes, water is trapped in the insulation and dripping down.