Best Friend just lost someone very close to him. What to do?

#1
My best friend and I are like brothers. We’ve known each other for about 12 years now. About almost a week ago, he lost his mother due to an unfortunate car accident and I can’t comfort him right now cause I’m currently abroad for an international dating social event for 2 weeks. I’ve tried calling him via phone or social media but it seems like his phone is off. Knowing him, he must be devastated right now and chose to isolate himself. What do you guys think I should do? Should I end my tour short and fly back to help him out? Or are there any other alternatives I can do while I’m out of the country?