SPOKANE, Wash. -

Accused Spokane serial killer Donna Perry made another bizarre court appearance Tuesday to enter a plea in the murders of three Spokane women in 1990.

It was a day of delays. First, Perry refused to appear, so the court ordered she be brought to court and then, once she did show up, she didn't enter a plea. This comes on her appearance two weeks ago when Perry refused to come to court at all.

In court Tuesday, Perry spent the entire hearing sitting with her head on the table and not saying anything to the court.

Perry's defense attorney entered a motion previously that she would like the matter entered as a not-guilty plea by reason of insanity. She was supposed to file the paperwork for it but hasn't, citing that prosecutors first have to do research on it and submit their findings.

Court documents say Perry told investigators, she had a sex change so she wouldn't be so violent, but, stopped short of saying she committed the murders while living as a man named Doug Perry.

The judge considered entering a 'not guilty' plea on Perry's behalf, but prosecutors suggested waiting a day so both sides could research what that would mean. The judge granted the joint motion.

Detectives have said they have DNA and fingerprints linking Perry to the murders of Yolanda Sapp, Kathleen Brisbois and Nickie Lowe.