Congressional Democrats called for investigations Wednesday into renovations at the Lincoln Memorial Reflecting Pool, as the ongoing drama over the president's problem-plagued, $16 million rehabilitation project continued to roil the capital.

Lawmakers in the House and Senate demanded answers about the saga that's been highlighted in the news cycle for weeks, even as the White House has repeatedly blamed - without evidence - unidentified vandals for peeling paint and other problems.

Six people have been arrested, President Donald Trump said, without providing details, and a local wildlife nonprofit conducted necropsies on dead ducks found near the Reflecting Pool.