Well, maybe the to-be-husband is the culprit.
-He "talked" with his to-be-wife via phone even thought the accident had already happened
-He probably "hurt" his hand to glass fragments on purpose in order to explain his wound he got when he attacted against his to-be-wife. Or something...
-He blew up the bomb in the car using his mobile phone for that...
And of course I have no evidences yet.