Office of Beitar Jerusalem torched amid tensions related to opposition to the purchase of two Muslim players.
The attack took place on Friday (08/02) a day after four supporters of Beitar Jerusalem charged with chanting racist taunts against Chechen origin Muslim players during matches and training.
There were no casualties in the fire that led to losing a number of items in the Beitar Jerusalem office including trophies and team uniforms.
Tensions have risen since Beitar Jerusalem announced the signing of Zaur Sadayev and Gabriel Kadiev from Russian club Terek Grozny.
In a match on 26 January, some Beitar Jerusalem supporters chanted anti-Arab and put the words, "Beitar-pure forever."
After the match, the police arrested three suspects for being trigger racism.
But the owner of Beitar Jerusalem, Arkady Gaydamak, declared transfer for two Muslim players will remain to be done.
Gaydamak said the opposition was just emerging from a small number of supporters.
Police spokesman Micky Rosenfeld said it was investigating possible links between the fire and the transfer. Mayor of Jerusalem, Nir Barkat, said police would "act decisively to deal with it".
Beitar Barkat praised for what he called taking steps "to combat racism and violence." Israel Football Association (IFA) said FIFA has requested clarifications related to racist chants by some supporters to the Muslim players.