A man has died after his car crashed into a bank in Waikato today.

When emergency services arrived at the scene the man was suffering from a heart attack, northern police communications Inspector Ian Brooker said.

It was not known if the heart attack caused the man to crash.

The accident happened on State Highway 3 at Piopio, in the Waitomo District about 10.20am, Mr Brooker said.

- NZPA