If there are two elders involved it is most likely an investigation committee. If he hasn't shown his face for sometime perhaps they are going on gossip of wrongdoing.
I also know an elder who looks at the inactive cards and hunts the people down to get them to either come back or DA themselves. It looks better when the circuit overseer comes around if the cards are all in order.
I would tell your friend to not meet with them. Sounds like they are on a witch hunt.