Investigators from the Douglas County Sheriff's Office put on plastic shoe coverings as they enter a home at 1602 N. 1500 Road, where a woman was injured on Thursday night.

Douglas County Sheriff’s deputies on Friday were investigating what they described as a medical emergency at a house just east of the Lawrence city limits.

A 50-year-old Lawrence woman was injured at the home Thursday night and taken to a Kansas City area hospital by helicopter, the sheriff’s office said.

About noon, officers left the home at 1602 N. 1500 Road, but sheriff’s spokeswoman Lt. Kari Wempe wouldn’t say whether officers thought a crime had been committed, and only would confirm an investigation was under way. She also said she did not have the woman’s name.

Officers were dispatched to the residence, in a rural area, just east of Oak Hills Cemetery, at 10:07 p.m. Thursday on a medical emergency call, Wempe said.

“Because of the nature of the injuries, we are conducting a routine investigation,” Wempe said.

Friday afternoon, Wempe said deputies were filling out paperwork on the case, but she didn’t expect to learn anything else about the situation today.

Investigators were seen going in and out of the house with blue booties over their shoes. Douglas County Coroner Erik Mitchell also went inside the house for a brief period this morning. He was seen exiting the home wearing blue gloves.

“Dr. Mitchell was asked to come to the scene, using his expertise and experience to help our office establish whether the evidence at the scene is consistent with a medical emergency,” Wempe said in an e-mail to the Journal-World.

Kate Dinneen, a nearby neighbor, said she heard several emergency sirens on North 1500 Road last night.

“The sirens came,” she said. “One came and then about four five minutes later another came and then a few minutes after that another, so it wasn’t all at once and then a helicopter came out and it was flying around and flying around.”