The Kenyan threat remains for New Zealand runners Nick Willis, Angie Petty, Nikki Hamblin and Zane Robertson as they prepare for the Rio Olympics in August.
The quartet are part of a 10-strong Kiwi athletics team to attend the Games.
Any thoughts their Kenyan rivals might be absent have been tempered by news that an anti-doping bill has been passed by the country's parliament. The bill criminalises sports doping, meaning guilty athletes could be imprisoned for up to 12 months, or face a fine.
International Association of Athletics Federations president Lord Coe threatened Kenya with a ban if the bill didn't pass into law.
If enacted, some of the world's top athletes would have missed Rio, with Kenya topping the 2015 world championships medal table with seven gold medals.