1st Teen Pleads Guilty In Worcester Slaying By LIBBY CUDMORE • Special to www.AllOTSEGO.com COOPERSTOWN – Alex Borgreen, 17, one of the three teens charged in the Oct. 2019 murder of Kenneth Robinson at his home in Worcester, has plead guilty to Burglary in the first degree, according to District Attorney John Muehl. Borgreen is the first of the three former Oneonta High School students to plead in the case.…