Four men have been charged in a Conoy Township home-invasion robbery last month in which a man was beaten with a piece of wood, shot with a stun gun and a BB gun in the temple, police said.

Three of the men wore ski masks when they broke into the Stackstown Road home on April 9 and stole the man's wallet, cash and some marijuana after, according to Susquehanna Regional Police. A fourth man served as lookout.

Derrick E. Getz, 28, address unknown, Wesley James Grove, 39, no address available, Dylan Michael Maulfair, 24, of Elizabethtown, and Michael Alan Maulfair, 22, of Harrisburg, were each charged with robbery, burglary and conspiracy on April 24.

Michael Maulfair acted as a lookout, police said.

Police said the men were suspects in similar robberies in Dauphin and Lebanon counties.

Witnesses gave police detailed information about the men, police said, and cell phone records placed at least Dylan Maulfair's phone at the victim's home, police said.

All four men are either in custody or awaiting preliminary hearings, police said.