A Current Affair reporter Ben McCormack has been suspended by the Nine Network after being charged with sending child pornography material.

McCormack, 42, was arrested about 7.30am yesterday during a vehicle stop on Driver Avenue in Moore Park, Sydney.

"Police will allege in court the man was engaged in sexually explicit conversations about children with an adult male and discussed child pornography," a statement from NSW Police said.

Ben McCormack has been charged with sending child pornography material. (NSW Police)

McCormack was taken to Redfern Police Station and charged with using a carriage service for child pornography material.

He was granted strict conditional bail to appear at Downing Centre Local Court on May 1.

McCormack walked from the Redfern station last night into a media scrum. He did not make any comment and left in a waiting car.

The Nine Network announced it has suspended McCormack from his reporting duties.

“Ben McCormack, a 25-year veteran of the Nine Network, was arrested today and charged by New South Wales Police with using a carriage service for child pornography material,” a statement read.

“And while justice must take its course, given the serious nature of the allegations Nine has taken a strong position and immediately suspended Ben McCormack.”

Police searched a unit in Alexandria and offices at Channel 9's Sydney studios in Willoughby following the arrest, seizing computers, a mobile phone and electronic storage devices.

McCormack was arrested after a vehicle stop today. (NSW Police)

McCormack has been granted strict conditional bail. (NSW Police)

Staff were asked to leave the office while police attended but have since returned to work.

"I can confirm that officers from the New South Wales police have been at TCN this morning investigating matters relating to a staff member at A Current Affair," Nine's Director of News and Current Affairs Darren Wick said in an email to staff.

"It's a personal matter that does not relate to the program or Nine.

Channel 9's TCN studios in Willoughby, Sydney.

"We are co-operating with the police. However, we are not in a position to comment any further as this is an ongoing investigation."

Earlier Nine’s Director of Communications and Public Relations Victoria Buchan confirmed police were "at ACA investigating a matter".

"It's a personal matter and it's not related to a story or the program. And we're co-operating fully," she said.