YOU SAID:

turns out another car crashed into him afterwards

INTO JAPANESE

その後、別の車が彼に衝突したことが判明した

BACK INTO ENGLISH

Then it turned out that another car had crashed into him.

INTO JAPANESE

その後、別の車が彼に衝突したことが判明した。

BACK INTO ENGLISH

Later, another car was found to have crashed into him.

INTO JAPANESE

その後、別の車が彼に衝突したことが判明した。

BACK INTO ENGLISH

Later, another car was found to have crashed into him.