Natalie Ciappa Tribute

As the father of Natalie Ciappa tried to breathe life into his 18-year-old daughter who lay unconscious on a couch, police said the teenage host of the house party in Seaford refused to help.

Instead, Seewoo Sung cleared away the empty bottles and beer cans strewn about the recreation room floor as he tried to hide the signs of the previous night's gathering, police said.

Police Monday arrested Sung, 19, of South Street, and charged him with tampering with physical evidence, a Class E felony. The charge carries a maximum penalty of 1 to 4 years in jail, police said.

Ciappa was taken to New Island Hospital in Bethpage and pronounced dead. The cause of death is unknown.

At Plainedge High School, where Ciappa was a senior, students grappled with her death.

Ciappa planned to study criminal psychology at SUNY Old Westbury in the fall.