INDIANAPOLIS – Attorneys handling the appeal for convicted Delphi murderer Richard Allen are again asking for more time to get their case ready.

Mark K. Leeman and Stacy Uliana filed paperwork last week seeking an extension of a Sept. 5 deadline to submit their brief to the Indiana Court of Appeals.

In November, a jury convicted Allen of murder in the February 2017 deaths of Abby Williams and Libby German near the Monon High Bridge. In December, Special Judge Fran Gull, assigned by the Indiana Supreme Court to oversee the high-profile trial, sentenced Allen to 130 years in prison.

The attorneys filed a notice of appeal on March 11.

Facing a Sept. 5 deadline, the attorneys said they would be unable to file a brief by that time. They cited a voluminous amount of information to go through, including transcripts from various hearings and the trial, numerous interviews and documents, media files and video, depositions, physical exhibits and autopsy reports, among other material.

“In short, the matter under appeal is so complex that an adequate brief cannot reasonably be prepared by the date the brief is due,” the filing said.

Allen was transferred to Oklahoma under an interstate compact agreement with the state of Indiana.

Allen’s relocation has further complicated matters, the attorneys wrote. They’ve spoken with Allen only once and believe they’ll need to go to Oklahoma for an attorney-client visit.

The attorneys previously requested a similar extension in early August. Their most recent filing asks for a 30-day extension to Oct. 5.