A judge heard testimony all day Tuesday in a case involving a Saline County teenage girl accused of stabbing her younger sister to death last summer.

The Saline County Attorney’s Office wants to prosecute the now 15-year-old , who is accused of stabbing her 13-year-old sister, as an adult. Sierra Niehuas was 14 at the time her sister Galazia died last year in August.

Sierra appeared in Saline County District Court Tuesday with her legal counsel. Judge Patrick Thompson heard multiple people testify, including family and friends of Sierra.

As a part of the evidence, social media conversations between Sierra and some of her friends were shown. An online video that Sierra sent to a friend was also shown. In the dark humor video which she did not create, two males are shown talking. At one point in the video one of the males has a knife, and talks about “shanking”, or stabbing the other in the back.

Previously, testimony indicated that Galazia had been stabbed in the back.

There was not enough time in the day for the judge to hear all of the witnesses, so the hearing was continued until April 8th at 1:30 in the afternoon.

The case stems from the death of 13-year-old Galazia Niehaus. The Saline County Sheriff’s Office was notified of a stabbing at about 1:45 in the morning on Friday, August 1st. When deputies arrived at the scene in Northwest Saline County they found the body of Galazia, who had been stabbed to death. Sierra and Glazia Niehaus were both students in the Ell-Saline school district.

Sierra will continue to be held in the Regional Juvenile Detention Center in Junction City.