What is the meaning difference if we use was and had been in passive voice in below context. In my example I come to know that He was taken / killed by police/uncle. Then how I imagine what exactly happen in past which writer want to say.
1) After accident he was taken to hospital by Police. 2) After accident he had been taken to hospital by police.
1) He was murdered by his uncle. 2) He had been murdered by his uncle.