UNKNOWN
You see the opening sentence says
"During 1986"
he gives the year 1986 and then as you have already been told, towards the end of his statement there he alleges you took part in the assault and he talks about 40 to 45  people having been detained at your station and so on.   	I would have thought that at least if he indicates the year, and also take into account your very senior position, it would not have been difficult for you to check with the records whether such an incident did take place, the detention of 40 to 45 people at your own police station.