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Security will be tightened at Radio 1's Big Weekend, following this week's terror attack at an Ariana Grande gig, boss Ben Cooper says.

Twenty-two people, including children, were killed and 64 injured when a man detonated a bomb at Manchester Arena.

It happened days before 91�ȱ� Radio 1's biggest live event of the year.

Some people are concerned about safety at the event, where thousands of young people, will watch some of the world's biggest pop stars perform.

Ben Cooper, controller of Radio 1 and 1Xtra, tells Newsbeat security is top priority at Big Weekend.

"Radio 1 has taken security so seriously, we would not be going ahead if we didn't think we could provide a safe and secure event this weekend," he says.

"The safety of everyone involved in Big Weekend is our priority, whether that be our audience, the artists or the people working across the weekend."

Find out more about Big Weekend.

Ben says the tragedy in Manchester has been in the minds of everyone working on Big Weekend this week and the attack has "informed and been forefront in our minds about what we do this weekend".

Everyone attending Big Weekend will be searched at least once before entering the site in Hull, with security stationed at travel depots as well as at the gates to the festival.

"Radio 1's Big Weekend will be continuing as planned this weekend in Hull. After conducting a full review of the festival, in conjunction with the police and partners, various extra security measures have been put in place to ensure the safety of those attending," the station said in a statement.

"As part of this, everyone that enters the site will go through two rounds of thorough searches - one round conducted at transport hubs where police will be present, and a second round of security procedures at the entrance gates.

"We ask for the patience and cooperation of anyone coming to the event on the weekend and that they allow extra time to pass through security."

Ben confirms the entry system will be slower and asks everyone attending to be patient with security staff.

He also advises anyone attending not to bring large bags.

If anyone at Big Weekend does see something that makes them suspicious, there will be extra increased police and security staff on site to report a problem to.

"Again we hope people will be mindful," says Ben.

"We obviously want people to enjoy themselves and we hope we get the tone and the mood right.

"But if they do see anything suspicious, we have got extra security on and an extra police presence, so obviously just report anything that looks untoward."

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