Authorities won't back off their manhunt for a Monroe County man suspected of killing one state police officer and wounding another, Pennsylvania Gov. Tom Corbett said Monday.

"I always believe there is progress," Corbett told press gathered at the Blooming Grove Township municipal building in Pike County, referring to the search for 31-year-old Eric Frein.Frein has been on the run since Sept. 12, when police said he fatally shot Cpl. Bryon Dickson and wounded trooper Alex Douglass outside the Blooming Grove barracks."I feel confident we should be able to apprehend this individual," Corbett said. "I'm very positive about that."Police have focused their search along the border of Pike and Monroe counties near Canadensis, where Frein lived with his parents.Corbett urged residents in the area to continue going about their daily lives with vigilance.Pocono Mountain School District and the Monsignor McHugh School were closed again Monday as the search intensified, but students in the Wallenpaupack School District returned to classes.Some residents in the Canadensis area have been unable to get back to their homes due to heavy police activity in the heavily wooded region of the Pocono Mountains, and tensions are running high. The American Red Cross opened a shelter for displaced residents from two townships late Monday.One resident, Bill Mew, said the lengthy manhunt has been nerve-racking, especially with police choppers circling overhead."You start thinking to yourself, is this guy standing outside your front door? So you start looking out the windows, and then you think to yourself, that's not such a good idea, in case he's looking back," he said.Frein is believed to carry a long-standing grudge against law enforcement officers, specifically state police. Corbett reiterated that notion on Monday."On the night he shot two troopers, he had a chance to shoot a civilian and did not," Corbett said, referring to a 911 dispatcher who came out of the barracks when she heard gunfire.Hundreds of state and federal law enforcement officers, including many from New York and New Jersey, are aiding in the search for Frein. Corbett, however, said he wouldn't seek help from the National Guard."This isn't a national emergency," he said. "We have the resources we need. They are trained men and women including not only state police officers, but also members of the Federal Bureau of Investigation."Speaking briefly Monday was Lt. Col. George Bivens, who said police are receiving reports of Frein sightings and continue to "follow up on each and every one.""We believe we're getting close," Bivens said.Corbett thanked area restaurants for supplying law enforcement officers with food after long hours combing rugged and rocky terrain looking for Frein, a reportedly self-taught survivalist. He also lauded the local chapter of American Red Cross and the Salvation Army."My thoughts right now are with everyone out there going through those woods," Corbett said. "They are doing their sworn duty and putting their lives on the line trying to get someone with the intended purpose of killing someone."The Associated Press contributed to this report.