Kennewick Police Sgt. Ken Lattin says there are no signs of a break in or forced entry at the Hansen Park home where a 16-year-old girl and her 12-year-old brother were found dead of gun shot wounds Monday afternoon. The handgun was found nearby.

As the neighborhood mourns the family's tragedy, a house across the street has posted a photo of the 12-year-old boy in the front yard with a tie. Apparently he enjoyed wearing ties.

A police presence has been at the house non-stop since the children's stepfather discovered the bodies when he returned from work around 5 p.m.

Police are tight-lipped as to what they think happened. Forensic investigators are studying bullet trajectories to piece together the tragic events of Monday afternoon. But there are currently no outside suspects.

More than 4,000 people have "Liked" a Facebook page created for friends and family to offer condolences.