10/24/2011 05:26 pm ET | Updated Dec 24, 2011

Police In Dallas Area Search For Suspected Serial Rapist Targeting Members Of Delta Sigma Theta (VIDEO)

Over the last 11 months, four women in the Dallas area have been raped in their homes, and their attacker may have targeted them because they were members of Delta Sigma Theta, one of the nation's prominent African-American sororities.

The most recent attack took place on Friday in the town of Corinth, Texas. All of the victims, who were in their 50s and 60s, were assaulted between 9 p.m. and 4 a.m. The attacker reportedly revealed personal details about each of the women, leading authorities to suspect they are looking for one attacker.

The police have asked two local alumni chapters to turn over their rosters, according to the Dallas Morning News.

"While it is not yet confirmed that these victims were targeted because of their affiliation with the Sorority, we are erring on the side of caution and are advising our members in the Dallas area to take the necessary precautionary measures," Cynthia Butler-McIntyre, the sorority’s national president, said in a statement. "To think that our members are being targeted is disturbing and extremely disheartening. Until the individual responsible for these crimes is brought to justice, we will continue to remain in close communication with one another and law enforcement officials in the respective jurisdictions."

"It's very unusual that this guy would target people from that sorority," Louis Schlesinger, a professor of forensic psychology at the John Jay College of Criminal Justice in New York, told the Denton Record Chronicle. "It certainly sounds like he has some beef with that sorority."

The police have released video of a man believed to be connected to the attacks. The suspect is between 5-feet-7 inches and 6 feet tall, and between 275 and 300 lbs. He has a trimmed beard, a short haircut and possibly a receding hairline.

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