Person whereabouts

Hi everyone,
I have a friend who just traveled to the EBC. We've been in communication constantly until Wednesday.
They arrived in Lukla on Tuesday the 10th, and we haven't been able to contact them since. Unfortunately, we don't know the name of the hiking company, and we are wondering if there is any way to track them or establish some form of communication with them.
Thinking of contacting the tourism police, but any tips are appreciated