HAWTHORN endured a worrying security scare at Waverley Park with three razor blades discovered on the training track an hour before yesterday’s final session.

The Herald Sun understands the open blades — the type attached to a straight razor with a sharp exposed blade — were found by club staff preparing for training.

Cyril tested at Hawks training media_camera Cyril Rioli receives a warm reception from Hawthorn fans in the club’s last open training at Waverley Park before Saturday’s Grand Final against the Swans. Picture: Colleen Petch 1 of 23 media_camera Brian Lake enters training to the delight of Hawks supporters. 2 of 23 media_camera Jordan Lewis, Jonathan Simpkin, Jarryd Roughead and Luke Hodge before training. Picture: Wayne Ludbey 3 of 23 media_camera Rioli with Jordan Lewis. Picture: Wayne Ludbey 4 of 23 nav_small_close Want to see more?( 19 more photos in collection )Continue to full gallery nav_small_left nav_small_right

The Hawks believe they were deliberately planted and would have caused serious damage to a player who fell on an exposed blade.

It saw 40 support staff sweep the ground in the minutes before training, confident they were no more razors and allowing training to proceed.

The club had not ruled out cancelling training if a large number were found, but believe they had removed all by the time training started.

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Hawthorn chief executive Stuart Fox told the Herald Sun last night he was deeply concerned but had ensured no players were in danger.

“We can confirm there were some razor blades found and we took immediate action and scoured the ground before the players went out,’’ he said.

“We are fortunate that no one was hurt and disappointed that someone would go to that extreme and put our players in jeopardy.

The large crowd that was gathering to watch the Hawks go through their paces was totally unaware of the security sweep of the Waverley surface.

The club decided not to involve police and is unsure whether it was a stupid prank or something more sinister.

But the razors were clearly planted to hurt a player and had an open blade, not disposable cartridge razors that come in packs of four or eight.

The training session was seen as a significant test of Cyril Rioli’s recovery ahead of last night’s Grand Final selection.

Hawthorn’s Waverley Park training ground is open to the public so the club cannot lock out fans and spectators.

The Hawks continue to investigate an alternate training base with multiple ovals as the expand in their Waverley precinct.