BERNE, Switzerland (Reuters) - Switzerland will ask Germany and France to supply up to 1,000 police officers to assist with security measures at Euro 2008.

The move was announced at a news conference on Friday following a meeting of regional police and justice chiefs, who said they still had to formally present their request "for 500 to 1,000 police officers" via the Swiss government.

The police chiefs said they had carried out a new security assessment following Sunday's tournament draw and that none of the group matches due to take place in Switzerland had been classified "high risk".

They said that the extra officers from Germany and France were required due to the large number of spectators expected to visit the tournament.

Two of Switzerland's larger neighbours, Italy and France, have been drawn into the tournament's most daunting looking section, Group C, alongside the Netherlands and Romania.

The group's six matches will be played in Zurich and Berne.

Switzerland have been placed in Group A, along with the Czech Republic, Turkey and Portugal with games due to take place in Basel and Geneva.

Euro 2008 co-hosts Austria said they too would be calling on support from an additional 800 German police officers when they held their own security media conference on Monday.

Austrian organisers also avoided reference to "high risk" matches but acknowledged that games in Austria's own Group B would require "higher security precautions".

Austria were drawn in the same group as neighbouring Germany and Poland and near-neighbours Croatia with matches taking place in the Austrian capital Vienna as well as Klagenfurt -- the smallest of the tournament's host cities.

The Austrians said they expected less chance of trouble in Group D, which will involve Spain, Russia, Greece and Sweden playing matches in Innsbruck and Salzburg.

Euro 2008 will take place from June 7-29.

(Editing by Ken Ferris)