Naples, September 3 - Police arrested an alleged leading member of the Camorra mafia's notorious and feared Casalesi clan, Umberto Venosa, on Tuesday. The Camorra controls organized criminal activity around Naples. The 34-year-old fugitive is accused of extortion aggravated by the use of the mafia method. Police discovered Venosa in a home in Casapesenna, north of Naples, inhabited by Giuseppe Verrone, 34, and his 24-year old wife. Verrone was jailed and his wife charged for aiding the fugitive, who has been on the run since last month. Venosa is accused, along with two others, of demanding a ''pizzo'' or protection pay-off from businessmen working in storage and distribution of Nestle' products. The defendants allegedly showed up as a trio of thugs to victims, demanding 2000 euro payments, the so-called ''August holiday pizzo''. Venosa's alleged conspirators were arrested last month - Vincenzo Del Luca, 36, on August 13 and Andrea Bortone, 35, on August 17.