TOKYO -- The Virginia governor said Tuesday it was too early to draw conclusions about how campus authorities handled the deadly shooting rampage at Virginia Tech, while some questioned a lack of strong warnings following the first burst of gunfire.

Gov. Timothy M. Kaine made his remarks Tuesday morning in Tokyo before going to an airport to return to the U.S. He had arrived Monday to attend events here, but apparently cut his trip short because of the shootings.

A gunman massacred 32 people in two attacks Monday at the university in the deadliest shooting rampage in modern U.S. history. The gunman then committed suicide.

"It is a very tragic day for us in Virginia. My reaction was just shock. My first thought was just how tragic this was for the university," Kaine said.

Students at the campus bitterly complained that there were no public-address announcements there after the first shots. There was a time lag of more than two hours after the first shootings before an alarm was e-mailed campuswide _ around the time that another, more deadly burst of carnage occurred.

Asked if he thought there was any mismanagement on the part of the school in informing the students after the first round of shootings, Kaine said, "the investigation as to what happened is ongoing and I think it's important that we not draw any premature conclusions."

Kaine said he plans to attend a convocation planned at the campus Tuesday and stay there until Wednesday to deal with the aftermath.