Marrisa Shen: A timeline of her disappearance

On July 18, 13-year-old Marrisa Shenwent missing from her home near Central Park in Burnaby, B.C.

Her body was found in the park seven hours after her last known location. Now, police are calling her homicide a "random attack."

They have yet to identify a suspect.

• Homicide of 13-year-old B.C., girl was 'random' attack, say police

Here is what we know so far about theinformation police have gathered on MarrisaShen's movements that day.

1:00 p.m.

MarrisaShen is last seen at her home near the park.

5:00 p.m.

Shensends a text from her phone.

Police originally reported this as a phone callbut later clarified it was a text. Investigators haven't given any details about who she was in contact with or what she texted.

6:02 p.m.

Shenis seen on surveillance video leaving her apartment building near the park.

(Police have released anothersurveillance video from about two hours earlierthat shows her going into the building.)

Investigatorssay the video shows Shenwasn'tin distress at this point. It just confirms her last known location.

They believe these are the same clothes she was wearing when she was found.

6:09 p.m.

In video released six months after her death, Marrisais seen entering the Tim Hortonsat 6200 Mackay Ave. in Burnaby. She leaves an hour-and-a-half later.

11:30 p.m.

Shen's family reports her missing to police.

1:10 a.m.

Shen's body is found in asoutheast corner ofCentral Park, seven hours after she was last seen.

• Homicide of 13-year-old B.C., girl was 'random' attack, say police

Investigators are asking anyone who may have seenShenon July 18 between6 p.m. and 1 a.m. to contact them.