HOLLAND, MI (WHTC) - Police are stepping up their search for a gunman who robbed a Family Fare Quick Stop convenience store on Holland’s south side earlier this month. Captain Jack Dykstra of the Holland Public Safety Department says detectives have received numerous tips on the July 12 robbery at the South Washington Avenue store. Silent Observer is offering a $2,000 reward for information leading to the arrest and conviction of the robber. Police are looking for a black male, about 6 feet tall with a muscular build, last seen wearing a gray T-shirt and New York Yankees cap. Call Silent Observer at 1-877-88-SILENT or log onto www.mosotips.com to leave a tip.