SPRINGFIELD, Mo. (AP) — A southwestern Missouri judge has modified bond conditions for a man free on bail on charges that he killed his pregnant girlfriend after she picked him up from a bar because he was too drunk to drive.

The Springfield News-Leader (http://bit.ly/2ujbfe8 ) reports a Greene County judge on Friday required 33-year-old Derik Osborn to undergo random drug screening, and that any vehicle Osborn drives has an ignition interlock device.

Osborn is charged with two counts of second-degree murder and domestic assault in the death of 27-year-old Valerie Williams. Authorities say she suffered a head injury, a lacerated liver and was 16 weeks pregnant.

Osborn was released after his bond was lowered to $100,000 from $500,000.

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Information from: Springfield News-Leader, http://www.news-leader.com