Blacksburg, Va. ? Stumped in their search for a motive, authorities at Virginia Tech have sent out a questionnaire asking students for any information they may have about gunman Seung-Hui Cho and his first victim.

The Associated Press obtained a copy of the questionnaire, which asks residents of the dorm where the rampage began if they had any interaction with Cho and whether they knew freshman Emily Hilscher, who was killed along with senior Ryan Clark in West Ambler Johnston Hall.

State police requested the questionnaire earlier this week, and the FBI asked resident advisers to help circulate the forms, said state police spokeswoman Corinne Geller. The questionnaires are voluntary, she said.

Earlier this week, state police Superintendent Col. W. Steven Flaherty said police have been unable to determine why Cho began his attacks at the dormitory, and why Hilscher was the first victim.

Witnesses place Cho at West Ambler Johnston shortly before 7:15 a.m., when he fired the two shots that killed Hilscher and Clark. It is not known how Cho entered the building.

The questionnaire asks students six questions:

¢ Briefly describe your activities in and around Ambler Johnston Hall between the night of April 15 and April 16. Please include times.

¢ Have you seen any suspicious activity in or surrounding Ambler Johnston Hall that might pertain to the events of April 16? If so, please describe.

¢ Did you know Emily Hilscher? If you did, please describe the nature of your relationship.

¢ Have you ever seen Seung-Hui Cho in or surrounding Ambler Johnston Hall? If so, please describe.

¢ Did you know or have any interactions with Seung-Hui Cho? If so, please describe.

¢ Please provide any other additional information that may be helpful to the investigation.