A large emergency services scene has been set up at a Wrexham Industrial Estate due to an 'ongoing incident' this afternoon.
The industrial estate is home to a warehouse that makes COVID-19 vaccines to be distributed across the country.
In a statement North Wales Police said: "We are currently dealing with an ongoing incident on the Wrexham Industrial Estate.
"The roads are currently closed and we would ask the public to avoid the area until further notice."
Pharmaceutical company, Wockhardt UK has said a 'suspicious package' was sent to the vaccine site this morning.
A spokesperson said: "Wockhardt UK in Wrexham this morning received a suspicious package to site.
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"All relevant authorities were immediately notified and engaged.
"Upon expert advice we have partially evacuated the site pending a full investigation.
"The safety of our employees and business continuity remain of paramount importance."
It is believed the bomb squad are in attendance at the scene after witnesses reported seeing bomb disposal units.
While Helen Cameron, Conservative ward councillor for Clatterbridge Wirral, Tweeted: "Avoid Wrexham Ind Estate if you can. The bomb squad are dealing with a suspicious package."
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