A Shippensburg man was robbed in his home by four men last week, one of whom threatened him with a knife, police said Tuesday.

Shippensburg Police were dispatched at 10:10 p.m. Aug. 8 and learned that a resident had walked into his home in the 400 block of East King Street to find four men who were not supposed to be inside. The men backed the resident into a corner, police said.

One of the men, Cordell Davis Marpoe, 18, of Shippensburg, threatened the resident with a knife, according to police. The men took several items and left the house.

Police arrested three suspects by late Friday evening, and arrested a fourth in Chambersburg on Sunday.

Marpoe was charged with robbery-threatening immediate serious injury, burglary, aggravated assault, criminal trespass, theft by unlawful taking and related conspiracy charges, according to court documents.

He was arraigned Saturday by Magisterial District Judge H. Anthony Adams, confined to Cumberland County Prison and was unable to post $100,000 monetary bail. He waived a preliminary hearing Monday in front of Adams.

Bail was reduced to $25,000 at that hearing, but Marpoe remains confined to Cumberland County Prison, according to court documents.

JT Allen Thompson, 25, of Shippensburg; Kevin Michael Mason, 20, of Shippensburg; and Ted Ennis, 41, of Hagerstown, Maryland; were charged with the same offenses as Marpoe, court documents state. They were each arraigned by Adams, confined to Cumberland County Prison, and were unable to post $100,000 monetary bail.

Preliminary hearings for Thompson, Mason and Ennis are scheduled for 1 p.m. Aug. 26 in front of Adams.

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Daniel Walmer covers public safety for The Sentinel. You can reach him by email at dwalmer@cumberlink.com or by phone at 717-218-0021.