The Environmental Protection Agency on Tuesday rejected a contention by scientists that the historic rainfall from Tropical Storm Harvey was linked to climate change, calling it "an attempt to politicize an ongoing tragedy."

Several scientists have said that factors related to global warming have contributed to increased rainfall from storms like Harvey, which struck the Texas coast as a major hurricane on Friday and has since triggered catastrophic flooding in Houston, killing at least 12 people and forcing tens of thousands from their homes.

"EPA is focused on the safety of those affected by Hurricane Harvey and providing emergency response support — not engaging in attempts to politicize an ongoing tragedy," said EPA spokeswoman Liz Bowman, responding to a question about comments from the climate scientists.