Two cases that were first heard in East Hampton Town Justice Court are now concluding elsewhere after both defendants pleaded guilty as charged.Leander D. Kobolakis, 23, who was charged in August with felony rape for having sex with a minor, entered the plea in the Riverside courtroom of State Supreme Court Justice Barbara Kahn on March 10, in a process known as “superior court information.”In an S.C.I., the defendant waives the right to be indicted by a grand jury in exchange for an agreed-upon plea and sentence. Mr. Kobolakis admitted to attempted sexual misconduct, a misdemeanor. He was 22 at the time of the incident; the girl involved was 16.“The defendant was certified as a sex offender and is scheduled to be sentenced on May 5 to a period of probation of six years,” said Robert Clifford, spokesman for Suffolk District Attorney Thomas Spota.The sex-offender designation will require Mr. Kobolakis to register with local police any time he moves, or face new criminal charges. This can continue for 20 years, or for life, depending on a court’s assessment of the risk of a repeat offense.His attorney, Tad Scharfenberg, declined comment on the case this week.Jungsik Lee, 60, was also arrested in August, after a one-vehicle accident near the C.V.S. store on Pantigo Road in East Hampton Village. The three passengers in his van all sustained serious injuries, as did Mr. Lee. They were returning home to Queens after a day of fishing in Montauk.East Hampton Village police reported that Mr. Lee was highly intoxicated. Blood samples showed his alcohol level to be at least .18 of 1 percent, triggering multiple vehicular-assault charges as well as a drunken-driving charge. He pleaded guilty to two of the assault charges, which are felonies, as well as the drunken-driving charge.On March 12, State Supreme Court Justice Fernando Camacho, sitting in Central Islip, spared him a jail term but sentenced him to a conditional year of probation under strict supervision. If he steers clear of trouble during that year, said Mr. Clifford, he will receive five years’ probation.