The suspect was working as an intern in Nato's Supreme Headquarters Allied Powers (Shape) Europe in Mons, Belgium.
Brazil has argued the visit could have been used to raise suspicions about the electoral system's reliability ahead of October's vote, which the US state department rejects.
President Donald Trump had blamed "sick" vandals, and a former Olympian had been charged, but prosecutors now say contractors caused the damage.
The economy grew at an annual rate of 1.5% in the three months to June, down from 2.1% seen in the previous quarter.
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Belgium says a Canadian intern is suspected of spying at Nato. Here's what we know
The suspect was working as an intern in Nato's Supreme Headquarters Allied Powers (Shape) Europe in Mons, Belgium.
Brazil's president confirms two US government officials were denied visas over election interference fears
Brazil has argued the visit could have been used to raise suspicions about the electoral system's reliability ahead of October's vote, which the US state department rejects.
Trump administration drops Reflecting Pool vandalism charge and admits 'botched' repairs
President Donald Trump had blamed "sick" vandals, and a former Olympian had been charged, but prosecutors now say contractors caused the damage.
US economic growth sees surprise slowdown in second quarter
The economy grew at an annual rate of 1.5% in the three months to June, down from 2.1% seen in the previous quarter.