Washington DC - 3 April 2018

1. Alex van der Zwaan getting out of SUV and walking into court, while man with sign yells at him to lock him up

2. SOUNDBITE (English) Chad Day, AP Reporter:

"Alexander Van der Swaan, a 33 year old Dutch attorney was sentenced to 30 days in prison by a federal judge here. This is the first prison time or sentence that's been handed down in the special counsel's Russia probe or the investigation into Russian election interference and whether or not there was any possible collusion with Trump associates."

3. Van de Zwaan being checked by security ++MUTE++

4. SOUNDBITE (English) Chad Day, AP Reporter:

"It was unclear coming into this hearing whether he would actually go to prison for any kind of significant amount of time. During the hearing, the Judge Amy Berman Jackson said that she had considered imposing a fine, but didn't think that that would be enough to be able to deter other people, to send the right message about that they can't lie to the FBI or lie to the special counsel's office. So in this case, you know he had pushed for a fine and she did impose a twenty thousand dollar fine, but she also said you're going to need to serve 30 days in prison."

5. STILL photo of van der Zwaan walking into court

6 . SOUNDBITE (English) Chad Day, AP Reporter:

"Right, so you know this is kind of the first case that we've seen come to this point ,the sentencing phase and there are a number of other defendants who have pleaded to similar charges which is lying to the FBI making false statements. And so this kind of operates as kind of a guidepost that what we can expect, kind of going forward."

Washington DC - 8 March 2018

7. Pan of Paul Manafort walking

Washington DC - 3 April 2018

8 . SOUNDBITE (English) Chad Day, AP Reporter:

"Right, so he's now you know, he has a prison term to serve. And so the judge did allow him to voluntarily surrender. But I think they're going to do that as soon as possible. One of the things that the defense had been pushing for was an expedited schedule in this case, because he wants to return to London where he lives in time for his first child to be born which I believe is in August."

9. STILL photo of van der Zwaan leaving court with man holding up "Lock em up" sign

10. SOUNDBITE (English) Chad Day, AP Reporter:

"Right, so this is actually a very small part of the investigation that's going on, that's being carried out by Special Counsel Robert Mueller. Right now there's a trial that's set for next fall for Paul Manafort, which is where this Dutch attorney's case stems from. But there's also a whole host of other things that are going on with the investigation and namely among them is they're trying to secure an interview with the president over whether or not and ask him questions over whether or not he obstructed justice. And so you know this is one small part of what is a very large investigation. And as we learned in a court filing last night, there's a lot more that we just don't know that they're investigating until the special counsel is ready to tell us."

11. Various of Van der Zwaan leaving court and getting in SUV, then drives away

A Dutch attorney who lied to federal agents investigating former Trump campaign chairman Paul Manafort was sentenced Tuesday to 30 days in prison in the first punishment handed down in special counsel's Russia investigation. He was also ordered to pay a $20,000 fine.

Alex van der Zwaan's sentence could set a guidepost for what other defendants charged with lying in special counsel Robert Mueller's investigation may receive when their cases are resolved. Among them are a former White House national security adviser and a Trump campaign foreign policy aide.

Van der Zwaan had faced zero to six months in prison under federal sentencing guidelines, and his attorneys had pushed for him to pay a fine and leave the country. But U.S. District Judge Amy Berman Jackson, citing the need to deter others from lying in an investigation of international importance, said incarceration was necessary.

The criminal case against van der Zwaan is not directly related to Russian election interference, the main focus of Mueller's probe. But it has revealed new details about the government's case against Manafort as well as previously undisclosed connections between senior Trump campaign aides, including Rick Gates, and Russia. The allegations have also opened a window into the intersecting universes of international law, foreign consulting work and politics.

AP reporter Chad Day explains that this case "this is actually a very small part of the investigation," but that in some ways it "operates as kind of a guidepost" going forward.

Van der Zwaan admitted in February to lying to federal agents about his contacts with Gates and a person prosecutors have since revealed has been assessed to have ties to Russian intelligence. Though prosecutors did not take a position on whether he should be locked up, they stressed that he had lied "repeatedly" to investigators.

Van der Zwaan's attorneys argued that he had suffered enough already, saying his life had already been destroyed by his "terrible decision" to lie to federal authorities.

The attorneys also pushed Jackson to allow van der Zwaan to return to London as soon as possible where he lives with his wife, who is pregnant with their first child.