Probably for this reason, Pierre.
The Daily Telegraph
MONDAY, NOVEMBER 12, 1888
A correspondent forwards copies of descriptions of certain men who were last seen in the company of the woman who was murdered in Berner-street and of the woman who was mutilated in Mitre-square. These authentic descriptions, we have reason to know, have been secretly circulated by the authorities of Scotland-yard since Oct. 26, but the complete details have never been made public. This reticence is one of the mysteries of police administration, and it is difficult to find an explanation to account for the fact that this important information has been "confidentially communicated" to police-officers throughout the kingdom, but has been withheld from the people who have had the best opportunities of seeing and of, therefore, recognising the assassin. The point which the police appear to have been at most pains to suppress is the significant one that the unknown murderer has the "appearance of a sailor."