An affidavit says a slain Wichita State University student contacted a woman charged in his death about sexual services she advertised online shortly before he was killed.

Rayan Ibrahim Baba, a 23-year-old Saudi undergraduate student, was found shot in a parking lot of one of the university’s dormitories Aug. 8. Eboni Fingal was charged with first-degree murder and aggravated robbery in October, and a 23-year-old man also faces those charges.

The Wichita Eagle (http://bit.ly/1YUi9Lc) reports the affidavit released Wednesday says Baba called Fingal about 30 minutes before his death. The affidavit says police tracked cellphone locations from the suspects, and that and surveillance video pinpointed the three together in the parking lot.

According to the affidavit, Fingal told police she activated the phone for a friend, but couldn’t explain why the friend would be in contact with Baba.

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Information from: The Wichita (Kan.) Eagle, http://www.kansas.com.