House arrest is a lenient punishment for criminal activity and is used when jailing is not considered an appropriate punishment. You are fitted with a sensor around your ankle. You cannot leave your property. If you do, the sensor will beep and you have 10 seconds to get back. If you fail to return, the sensor will turn red instead of green and the police will come. The sensor may be configured to allow a person to go to work while wearing it.
He wasn't under house arrest.
Then the person would still be under house arrest.
no
He was put under house arrest
No
No, it is a common noun. He is under house arrest. He violated his house arrest and went back to jail. It would be a proper noun if it was the actual name of a thing or place. She went to the House Arrest officer to arrange the release of her son.
It is not clear that he was placed under house arrest. He is not under house address now, as at about 1900 GMT on 30 Jan 2011 he was addressing the crowds in Tahrir Square.
Galileo was put under house arrest.
No, never.
At home under house arrest
Galileo Galilei
Ankle bracelets or monitors are used to ensure that someone under house arrest remains within a certain range of the house. A signal is sent from the bracelet to a receiver that identifies the location of the person wearing it.