OKLAHOMA CITY (AP) — Prosecutors are expected to conclude their case in the federal bribery and extortion trial of the former leader of the Oklahoma Senate. Testimony resumes Friday in the trial of former Senate President Pro Tem Mike Morgan. Defense attorneys are expected to begin questioning witnesses on Monday. Morgan, of Stillwater, is accused of conspiring with lobbyist William Skeith of Edmond and attorney N. Martin Stringer of Oklahoma City to illegally accept more than $400,000 from three companies that sought his influence on pending legislation between 2005 and 2008. Morgan is charged with bribery, extortion, conspiracy and mail fraud. Skeith and Stringer are charged with conspiracy, extortion and mail fraud. All have pleaded not guilty. Defense attorneys say the payments to Morgan were legal fees. Prosecutors allege Morgan performed no legal work.