Show Extortion Attempt Suspect Is Held I KANSAS CITY May 7 J A P-A A man who federal agents said had demanded demand ed from James M M. Kemper president of the Commerce Trust company on threat of has been held since May 3 3 Edward F Conro Conroy federal bureau of Investigation tion lion chief here said today The man who gave ga his name as Peter Warren 20 20 of Dallas was captured cap captured when he accosted Kemp Kemper r at ata a street car shelter for two suitcases the banker had been instructed to take lake there Threatening letters had demanded |