A Maryland State Trooper faces felony charges of possessing child pornography after more than 3,000 images were found on his computer, a Baltimore County Police spokesman said.

Investigators say Bruce Allen Tucker, 47, of Esplanade Court in Owings Mills, had received and exchanged images of child pornography, including male and female children performing sex acts, posing nude and performing oral sex. He was arrested July 16 and released after posting $50,000 bail.

State Police spokeswoman Elena Russo said Tucker has been suspended without pay.

According to the statement of charges, the investigation began in March. All the exchanges occurred while Tucker was off-duty, said Lt. Robert McCullough, a Baltimore County Police spokesman.

Tucker had been a trooper for 13 years and was working as an investigator at the Maryland Coordination and Analysis Center, McCullough said.

Police officials are asking that anyone who may have had contact with Tucker, using the e-mail addresses Poledeepin@aol.com or Longpolein@aol.com to call the Baltimore County Crimes Against Children Unit at 410-853-3650.