Police in the Gaza Strip have scuffled with journalists demonstrating in support of a BBC reporter who was kidnapped last month.

Police pushed and shoved about 200 journalists who tried to enter the parliament building Tuesday, demanding information about Alan Johnston. The journalists displayed posters that said "Free Alan" and called on lawmakers to talk to them.

The parents of the BBC reporter appealed Monday for news of the fate of the journalist, one day after a previously unknown Palestinian group, The Brigades of Tawheed and Jihad claimed to have killed him.

There has been no independent verification of the claim.

In a message to news organizations, the group alleged it killed Johnston because of Israel's refusal to release Palestinian prisoners.

At the time of his March 12 abduction, Johnston was the only Western reporter permanently based in the territory.

Several journalists and aid workers have been kidnapped in Gaza in recent months. Most have been released within hours or days.

Some information for this report was provided by AFP and AP.