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ORLANDO (CBSMiami/AP) — Authorities are stepping up the efforts in finding a dangerous fugitive.

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A man wanted in the fatal shootings of his pregnant ex-girlfriend and an Orlando police sergeant has been added to the U.S. Marshals Service’s list of most wanted fugitives.

The Orlando Police Department tweeted Tuesday that 41-year-old Markeith Loyd is being added to the federal agency’s list of 15 most wanted fugitives.

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The agency also is adding $25,000 to a $100,000 reward already being offered by a local crime tip line for any information leading to Loyd’s arrest.

The police also said Tuesday that Loyd may have shaved his head. They posted a digitally altered photo of what he might look like without hair.

Loyd has been the focus of a weeklong manhunt since Master Sgt. Debra Clayton was killed in a Wal-Mart parking lot.

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