The body of Mrs.Anna Sekara;62;of Ohio street;Pricedale;was found floating down the Monongahela River Monday morning;Jan.19;1953. State police at the Belle Vernon sub-station said the woman had been missing from her home since 2:30 a.m.Friday. The body was found by workers of the Pittsburgh Steel Company plant at Gibsonton. Mrs.Sekara is survived by three sons by her first marriage;Joseph Costello of Wilmington;Del.;and Michael and John Costello of Belle Vernon R.D.2;three sons by her second marriage to John Sekara;who survives;Nicholas of Monessen;Andrew of Pricedale and George of Flushing;N.Y.;and seven grandchildren.