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ELLICOTT CITY, Md. (WUSA9) -- A daughter and her boyfriend were arrested on Friday afternoon, in the stabbing death of her father, police said.

According to police, 58-year-old Dennis James Lane was stabbed and killed in his home in the 8100 block of Winding Ross Way around 4:20 a.m.

"Jason Anthony Bulmer, 19, of the 8800 block of Town & Country Blvd. in Ellicott City andMorgan Lane Arnold, 14, of the 8100 block of Winding Ross Way in Ellicott City, will both becharged this evening as adults with first- and second-degree murder and conspiracy to commit murder," Howard County officials said in a news release.

Arnold encouraged her boyfriend to stab her father while they were all in the house early Friday morning, police said.

Someone inside the home heard all the noise and called 9-1-1 at around 4:20 a.m., police said.

"Both Bulmer, who had blood on his hands and clothes, and Arnold were sitting in an upstairsbedroom when the police arrived. Officers found Lane deceased with multiple stab wounds in a
different upstairs bedroom," police said in a news release.

Detectives believe Arnold told Bulmer they would run away together after the murder, police said.

Officials say it is unclearwhat motivated the two to kill Lane.

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