SEATTLE Police in Lake Stevens are asking for the public s help to find a drive-by shooter who killed a 15-year-old girl.

Detectives believe a shooter opened fire on Molly Conley and a group of friends Saturday night. They had been walking to the lake and celebrating her recent birthday at a sleepover.
Conley's friends were not injured.

Conley was a freshman at Seattle s Bishop Blanchet High School and, according to the school s president, was a straight-A student. Friends say she was also involved with soccer and lacrosse.

Blanchet President Antonio DeSapio called the incident a tragedy which impacts the entire Blanchet community. Conley s brother and cousins also attend the high school.

Police say they re investigating whether the shooting is tied to other similar incidents in Lake Stevens on Saturday. Fresh bullet holes were found in other parts of the city on Sunday. Amotive for the spree is unclear.

Molly's classmates met Monday morning for a prayer service before classes. Parents attended along with senior students who were on a scheduled skip day. Molly's brother, Johnny, had a message during the service.

He just told us to be sure to say 'I love you' to the people that we care about because he doesn't remember the last time he told his sister that he loved her, said senior Ben Flanagan.

A family spokesperson said Molly and her mother started a non-profit charity last year called Mother s Helpers to provide diapers, formula and other necessary items for mothers of children under the age of 2. The family is working on a way to set up donations for the charity.

Molly's mother has asked that people sending condolences onTwitter use the term Remembering Molly instead of RIPMolly, the family spokesperson said.

The Lake Stevens Police Department is working with the Snohomish County Major Crimes Unit and the Marysville Police Department on this incident. If you have any information you are asked to contact the Lake Stevens Police Tip Line at (425) 377-3214 or the Snohomish County Major Crimes Unit at 425 388-3845.

KING 5's Jake Whittenberg contributed to this report.

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