The United States has imposed movement restrictions in Kisumu as the country awaits the presidential petition verdict on Monday.
The court is expected to give a judgement on September 5 on whether to nullify the win of William Ruto as president-elect or to uphold it.
In an advisory on Thursday, the US said the ruling might occasion post-election violence.
“Election-related demonstrations and rallies regularly take place after elections, at times blocking key intersections and causing traffic jams,” the US said.
“Demonstrations may occasionally be violent, requiring police intervention. Strikes and other protest activities related to economic conditions occur regularly.”
The US said out of an abundance of caution, the U.S. Embassy has imposed movement restrictions on U.S. government personnel in Kisumu.
“The State Department reminds U.S. citizens of the continued need for sustained vigilance,” the US said.
The advisory comes a day after the US ambassador to Kenya, Margaret ‘Meg’ Whitman, on Tuesday visited Kisumu, a county the embassy had warned Americans against visiting days before the August 9, General Election.
This was Ms Whitman’s first official trip outside Nairobi and the first destination was the lakeside county.
Meeting her was also Governor Anyang’ Nyong’o’s first official function since he was sworn in for his second term last week.
The US Embassy issued an alert to American citizens in Kenya exactly 27 days ago, advising them to stay away from Kisumu. That provoked protests from Prof Nyong’o and other residents.
In a statement at the time, the embassy said election-related demonstrations and rallies regularly take place in the run-up to elections and were likely to continue, blocking key intersections and causing traffic jams in Kisumu.
When she visited on Tuesday, Ms Whitman paid a courtesy call on Kisumu County Commissioner Josephine Ouko and later met with Governor Nyong’o, whom she congratulated on his re-election.
When the envoy landed in the city, she tweeted that she was happy to fly to Kisumu on Tuesday morning.
“My first county visit in Kenya! Looking forward to a great day meeting local leaders, and U.S. Embassy staff leading critical U.S programs and investments,” she wrote.
She also praised Kisumu as one of the best hosts for US citizens and businesses.
“Kisumu is a beautiful city and host to numerous U.S. investments, American businesses, U.S. citizens & embassy programs,” she said.