The WA Opposition is calling on the McGowan Government to tear up a contract with controversial Chinese tech giant Huawei and to reopen a tender to build a new communications system for Perth’s public rail network.

The $206 million deal, which was inked last July, has been subject to growing scrutiny since the company was hit with a barrage of criminal charges in the United States relating to allegations it breached trade sanctions with Iran.

Pressure is mounting on the state government over a $206 million deal with controversial Chinese tech giant Huawei. Credit:ANDY WONG

Last week Premier Mark McGowan said he was concerned Huawei might be unable to import components for the project because of the US case, but was satisfied the company did not pose a security threat.

Deputy Opposition Leader Liza Harvey said the government had not done its due diligence before signing the Huawei contract and called for a full explanation if the state did not cancel it.