A simple derivation from ruiso bind, tie up, gives ruisama /ɾu.i.ˈsa.ma/ jail.
Ëlá ruisama nen eruttimo hír.
ël-á ruisama nen er-uttim-o hír
3-PL jail LOC TRANS.die.PFV PART
They died in the jail.
Vima vë ruisama në ívin chaso.
city ATTR jail TOP vicious do.PFV
The city's jail became vicious.
The normal verb for being in jail is some form of vëcho stay, remain, dwell.
Ël ruisama nen allui vëchat no re.
3SG jail LOC long.ADV remain.INF be.PFV PART
She will be in jail a long time.
The combination of infinitive + no + re is one form of the future. It marks predictions, rather than intentions.
Símur ruisama nen vëchëluto.
Sím-ur ruisama nen vëch-ël-ut-o
3OUT-PL jail LOC remain-CAUS-PASS-PFV
They were sent to jail (lit., made to be in jail).