"We will continue to meet periodically to make sure we are all still on board and up-to-date with the information," Holliday said.
Patty Fornicola, Ray Gricar's girlfriend, said she touches base occasionally with Bellefonte Police officer Darrel Zaccagni, who heads the case.
Tony Gricar said he and his brother were in town on Saturday for the Penn State-Ohio State game.
"It is the first time we had been back [in State College] and had no meetings or anything related to the case," he said. "We actually tailgated at the spot where Ray usually is with his friends."
Tony Gricar added that Gricar's birthday was Sunday.
"It would have been his 60th birthday ... obviously that is a little depressing," he said. "This is a waiting game; it's difficult."
Fornicola said this week and the months ahead, which include holidays and the couple's annual Vermont vacation, are going to be difficult for her and the whole family.
"We are coming to a time now when he would be really planning on getting everything wrapped up for his career," Fornicola said. "I'm still waiting, not knowing ... still trying to maintain some hope and that's kind of all you have -- just trying to keep going every day."
Acting District Attorney Mark Smith, who worked with Gricar for 20 years, said since Gricar's disappearance, he took on the workload of the district attorney and an assistant district attorney.
"I am working an incredible amount of hours every week, but I am also spreading some of that work around to some of the other assistant district attorneys," Smith said.
Smith said that when Gricar disappeared April 15, he had one to two approaching trials, which another prosecutor had to take.
"We did not have to continue or postpone any hearings because of Ray's absence," Smith said. "We've been able to maintain the typical caseload."
Smith said he and his colleagues are still "baffled" by Gricar's disappearance.
"So far there just has not been a resolution to his absence -- it [is] still up in the air and still on everyone's mind," he said.
Holliday said Bellefonte police do not have new information about a body that is being examined by the Lackawanna County coroner. Lackawanna County coroner's assistant Ann Berardelli said the body found in the Lackawanna River Sept. 20 is classified as an ongoing investigation. Scranton police said the body is most likely that of a missing Carbondale man who disappeared shortly before the body was discovered.
"[If the DNA does not match the Carbondale man,] further testing will be done on others, including Ray Gricar," Berardelli said.
Holliday said that despite reaching the six-month mark, Bellefonte police would continue to investigate just as they have been.
"I don't think that a certain timeframe -- one month, six months, one year -- makes a difference in the scope of the investigation," he said. "The frustration for us, as investigators, is that it is basically the same situation as we were in the beginning ... still a missing persons case after all this time."