Complex sentence: By a coincidence, Fisher had not being present at the raid on Liliesleaf, although he had been part of the trusted Rivonia inner circle and a number of documents seized by authorities were in his handwriting.
Split into simpler sentences: By a coincidence, Fisher had not being present at the raid on Liliesleaf, although he had in fact been part of the trusted Rivonia inner circle. A number of documents seized by authorities were in his handwriting.