PHNOM PENH, Cambodia (AP) _ An opposition member of Cambodia's parliament was taken from his home Wednesday in what his party claimed was a politically motivated arrest ordered by Prime Minister Hun Sen's ruling party.

Four men in military uniforms took Lon Phon of the Sam Rainsy Party from his home in central Phnom Penh, party official Yim Sovan said.

The politician's frantic sister-in-law telephoned party headquarters shortly afterward, Yim Sovan said.

National police spokesman Gen. Khieu Sopheak confirmed that Lon Phon was taken from his home, but denied any arrest or police involvement.

``No political motivation, no arrest,'' he said. ``The first assessment is that this is a kidnapping case.''

Lon Phon's disappearance comes during a time of rising tensions between the government and the opposition, which has organized several demonstrations against Hun Sen's policies.

``I think this is politically motivated because we have conducted demonstrations in front of the National Assembly for the past few days,'' Yim Sovan said, adding that Lon Phon attended a protest on Monday that accused members of the military of land grabs.

Police said Lon Phon's profession as a successful hotel owner was a possible motive for kidnappers.

Dozens of wealthy businessmen have been kidnapped for ransom in recent years, often in cases involving corrupt members of the army and police.