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Four arrested in alleged baseball bat attack

Delmar
Delmar (Carroll County Times)

Blaming a Mount Airy man for their daughter's drug habit, the parents of the woman and two others broke into the man's home Sunday night and one allegedly beat him with a baseball bat.
William Joseph Costigan, 50, of Damascus, is charged with first-degree burglary and assault. He was released Monday from the Carroll County Detention Center on $350,000 bail.
Tanya Jean Costigan, 49, of the same address, is charged with first-degree burglary and conspiracy to commit first-degree assault. She was released Monday from the detention center on $100,000 bail.
Daniel Eugene Delmar, 59, of Gaithersburg, is charged with first-degree burglary and assault. He was released Monday from the detention center on $250,000 bail.
Catherine Alicia Lonas, also of Gaithersburg, is charged with first-degree burglary and conspiracy to commit first-degree assault. She was released Monday from the detention center on $100,000 bail.
Around 7 p.m. Sunday, police were called about the alleged assault at the home of Eric Mandley, in the 4400 block of Old National Pike in Mount Airy, according to arrest records in the cases, in which police provided their account to support the charges.
According to a witness, the four broke in to the home and William Costigan began "wailing on" Mandley with a wooden baseball bat.
Mandley was transported to the University of Maryland Shock Trauma Center in Baltimore and later discharged, according to police.
Mandley used to date the daughter of two of the alleged assailants, Kristin Ashley Delmar, whose parents are Tanya Jean Costigan and Daniel Delmar, according to the arrest records.
According to the witness, Mandley and Kristin Delmar have drug problems, and Kristin overdosed a few days ago.
Kristin Delmar told police that her parents blame Mandley for her drug use, the documents state.
The four also allegedly broke into the Mount Airy home Friday and Saturday and threatened to come back, according to the charging documents.
Court dates have not yet been set in the cases, according to electronic court files.

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