From NBCDFW: Police are appealing to the conscience of the man who has attacked at least four alumnae of a national black sorority.

The man has attacked at least four members of Delta Sigma Theta in home-invasion-style attacks since November 2010, sexually assaulting three of them. Women in Plano, Coppell and Shady Shores have been attacked.

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“Read your conscience, follow your conscience, turn yourself in so you can put this behind you,” said Andrae Smith, of Plano police.

Find My iPhone app. finds suspected thief

A three-department task force of detectives from Coppell, Plano and Corinth have been working around the clock, following leads in hopes of making an arrest.

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