A good friend of mine is currently traveling through Europe by himself for a month. We've been chatting pretty regularly throughout the trip, but since Friday no one I know has heard from him. We're still hoping that it's just a lost phone or connection issue, especially since he was supposed to be in a more rural area around this time, but I am getting a little worried.
I haven't reached out to his family for his specific itinerary yet, because I don't want to worry them needlessly, but that would be my next step. Last I knew he was in Barcelona, but I think Portugal was his next stop, and he is supposed to return to the US this coming Saturday.
Given that he is on another continent, it makes it much more difficult to try and confirm where he is or to alert authorities if we need to. If we are able to get his booking details, will airlines, trains, hotels, etc. confirm whether he boarded or checked in? Who are the right authorities to contact to get help in this search if we decide it's necessary to escalate?
Update: I finally got an email from my friend today, and he is safe and back in the US. He had his phone pickpocketed and was using his precious internet cafe time to get in contact with his phone company. Thanks for all the helpful info!