A man has been charged with allegedly pointing a high-powered green laser at a WA police plane at East Cannington in Perth 's south-east.

The aircraft was conducting patrols at 10.45pm yesterday when the laser was allegedly directed at the plane for three to four seconds, forcing crews to take evasive action.

Crews traced the source of the laser to a house in East Cannington using on-board infrared technology and directed police on the ground to the home.

A man was arrested and a search of the property was carried out.

A 39-year-old East Cannington man has been charged with causing fear or alarm with a laser to people in a conveyance and possession of a controlled weapon.

He will appear before Armadale Magistrates Court on Tuesday, November 11.

Laser strikes on planes have the

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