WYANDANCH - ? Police in Suffolk County are investigating two separate party shootings over the weekend. Police say 39-year-old Edward Louis Ivey Jr., of Brooklyn, was shot and killed on West Booker Avenue in Wyandanch early yesterday morning. Cops say two people were also hurt in a drive-by shooting at a Brentwood party. Through an interpreter witnesses told News 12 Long Island the incidents were gang-related. The gunmen are still on the loose. Detectives want anyone with information about the shootings to call Suffolk Crime Stoppers at 1-800-220-TIPS. Police: Brooklyn man killed in Wyandanch