Va. Tech shooting investigators probe eBay, e-mail accounts

~ The eBay account was used to buy ammo and sell books with violent themes and tickets to Virginia Tech games.

BLACKSBURG, Va. -- An eBay account that investigators believe may have belonged to the Virginia Tech killer was used to buy ammunition for the type of gun used in the rampage, according to information on the auction site.

The eBay account holder with the handle Blazers5505 also sold several books with violent themes and tickets to Virginia Tech football games and lists Blacksburg as the account's address.

A search warrant affidavit filed Friday stated that investigators wanted to search Seung-Hui Cho's e-mail accounts, including the address Blazers5505@hotmail.com.

The account holder recently bought two 10-round magazines for the Walther P22 -- one of the weapons used in the massacre. The clips were bought from a gun shop in Idaho.

He also sold a graphics calculator that contained several games, and bought many books about violence, death and mayhem.

"The calculator was used for less than one semester then I dropped the class," he said.

His eBay rating was superb -- 98.5 percent. Only one person gave him a negative rating. The site says the person has had an account since January 2004.

Virginia State Police spokeswoman Corinne Geller said investigators are "aware of the eBay activity that mirrors" the Hotmail account. "If that is in fact Cho's account, I don't know."

The eBay material is part of investigators' efforts to sift through electronic records for a hint as to Cho's motives.

Authorities sought Cho's cell phone records on the chance he warned someone about what would become the nation's worst mass shooting in modern history. They also hope to glean any relevant information from his e-mail and that of Emily Hilscher, one of the first two victims.

"Seung-Hui Cho is known to have communicated by cellular telephone and may have communicated with others concerning his plans to carry out attacks on students and faculty at Virginia Tech," police wrote Friday in an affidavit seeking records from Verizon Wireless.

Another possible clue: his phone calls home to his parents. The affidavit states that Cho made regular calls home on Sunday evenings.

Police also sought warrants for Virginia Tech e-mail records in their hunt for a connection between Cho and Hilscher, who was killed at West Ambler Johnston Hall.

Another affidavit sought Cho's records from the student health center, and police obtained his medical and counseling files. The contents of the affidavits were first reported by ABCNews.com.