Police in Tampa, Florida have arrested a 30-year-old man in connection to his missing girlfriend after he refused to help them with their investigation.

Collin Scott Knapp was arrested and charged on Monday with second-degree murder in the disappearance of 34-year-old Kathleen Moore.

The Pasco County Sheriff’s office says evidence from their investigation into Moore’s disappearance leads them to believe that Moore is dead but they have yet to locate her body.

“Our hearts and prayers pour out to the family and friends of Kathleen Moore. I know you were all searching for a better resolution, and we all were, but unfortunately, this is what we have,” Pasco County Sheriff Chris Nocco said at a news conference.

Authorities say they searched the dumpster of a restaurant where Knapp works and found a significant amount of Moore’s blood on clothing that belonged to Knapp.

Investigators also learned that Moore and Knapp were seeing arguing on November 24th. Knapp told police that they had a public argument then they continued arguing at home.  Knapp says he then went to his job “to complete a meat inventory order,” around 1:30 a.m.

According to the report, authorities found no evidence that Moore left the home and Knapp is refusing to tell them where Moore’s body is.

Moore has requested an attorney since being taken into custody.

Officials say they have received many tips regarding the case and welcome more.

“If there’s one thing that I can tell the family is that Kathleen was absolutely loved by this community,” Nocco said.

If you have any information about this case, you are asked to contact the Pasco County Sheriff’s Office at 727-847-8102.