A US soldier has been charged with assault after allegedly waterboarding his four-year-old daughter, police in the state of Washington have said.

华盛顿警方称，一位美国士兵对其四岁大的女儿使用水刑而遭指控。

Waterboarding has been classified as torture by the Obama administration

Sgt Joshua Tabor dunked（浸入液体） the girl's head in a sink full of water for not reciting（背诵，朗诵） the alphabet, police in the town of Yelm said.

Waterboarding（水刑） is an interrogation（审问，讯问） technique that simulates（模仿，假装） drowning and has been banned as torture by the US.

Sgt Tabor is a helicopter repairer who served in Iraq from 2007-08.

Yelm police chief Todd Stancil said Sgt Tabor was arrested on 31 January.

Officers were called after Sgt Tabor was seen walking around his neighbourhood holding a Kevlar helmet and threatening to break windows, the police chief added.

The girl was then found hiding in a locked bathroom in the soldier's home, Mr Stancil said on Monday.

Sgt Tabor posted bail¹ of $10,000 (£6,400) on Monday and has been confined（限制） to barracks（简陋的房子，兵营） at his base in Washington state.