None of the presidents interviewed before Sunday's session would give details of the talks in Tula, about 200 miles north of Tegucigalpa, the capital.
A bakery official in Tula blamed reports from Moscow, which he said had touched off a wave of panic buying.
Mr Gekht is a member of the Russian parliament and head of the Producers' Association. Sokolniki owns a paper factory in Serpuchov near Moscow and a printing plant near Tula.