NEW : British mercenary Simon Mann jailed for planning a Equatorial Guinea coup . Mann testified he was ` ` involved '' in organization that plotted the coup . Mann implicated former friend Mark Taylor in 2004 , during trial .
NEW : British mercenary Simon Mann jailed for plotting a Equatorial Guinea coup . Mann testified he was `` junior '' in organization that plotted attempted coup . Mann implicated former friend Mark Thatcher in 2004 plot during testimony .