WASHINGTON — Senators told oil executives Wednesday that high oil prices cannot be explained by supply and demand and the oil industry's concentration — and OPEC price collusion — is contributing to the costs facing consumers.

Executives of the five largest oil companies were appearing before the Senate Judiciary Committee.

Committee Chairman Patrick Leahy, D-Vt., said there's an unexplained "disconnect" between prices — at nearly $130 a barrel — and legitimate supply and demand.

"We need to get prices under control.... We can only conclude that the oil markets have failed," said Sen. Herbert Kohl, D-Wis.

But Shell Oil Co. Chairman John Hofmeister said the prices can be explained, saying, "The fundamental laws of supply and demand are at work."