April 18 (Reuters) - Women students at Virginia Tech had complained about Cho Seung-Hui long before he killed 32 people at the university in the deadliest shooting rampage in modern U.S. history, campus police said on Wednesday.

Here is a chronology of what occurred, according to university authorities.

Autumn 2005 - Dr. Lucinda Roy, chairwoman of the Virginia Tech English department, told Virginia Tech police of her concerns about Cho's disturbing and angry writing assignments.

Nov. 27, 2005 - Cho contacted a female student through telephone calls and in person. There was no direct threat made, but she notified the Virginia Tech police about what she termed his "annoying" communication, declining to press charges. Officers spoke with Cho about it and he was referred to the university disciplinary system.

Dec. 12, 2005 - Cho sent instant messages to a second female student who complained to the campus police. There also was no direct threat.

Dec. 12, 2005 - Later the same day, an acquaintance of Cho contacted the campus police, concerned that Cho might be suicidal. Officers met with Cho again and talked with him at length, and asked him to speak to a counselor.

Cho went voluntarily to a counselor. Based on that interaction, a temporary detention order was obtained, and Cho was taken to Carilion St. Albans Behavioral Center, near Radford, Virginia.

He was released from the center and returned to the university. Wendell Flinchum, campus police chief, said he was aware of no further contact between Cho and campus police until the massacre on Monday of 32 people, and Cho's suicide.

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