Thomas Michael Stewart, 59, who was reported missing in late May, is still unaccounted for, the police said this afternoon.
Anyone knowing his whereabouts was requested to phone on 21 224 001-9 or 119.
Mr Stewart went missing from Mt Carmel Hospital while walking in an internal garden with his wife, Phyllis.
He climbed one of the trees and ran away before hospital staff could stop him.
The Health Ministry subsequently ordered an investigation.