Dear Princess Twilight
This is a collection of my findings after interviewing the survivors of the Monday night incident.
Between the 28th and 29th during the night, a horrific scene was reported by a few witnesses. I arrived to find the stream that goes through the town of Stonebridge blocked and backed up with dead bodies. We identified 31, of which only 7 survived. Though I'm not sure I can say 24 ponies died. 1 would be more accurate. Minus Underscore from number 1 First Street was the identity of every body found. 20 seemed to have died from intentional drowning, but 11 had electrical burns.
One Minus regained conciousness every day from Tuesday until Monday. I do not think any of the others will be waking up. I interviewed all 7 of them and found that none of them had experienced the exact same events, and none have any idea what had happened. Every one of them mentioned a self-help group and the ponies within it, as well as roomates and partners they had. We've found and interviewed all of them and found that this self-help group was disbanded a while ago. A pony not named by any Minus, Bright Shade, was the original organisor, and he was spoken to as well. Not one of these ponies knew who Minus was. We even got in contact with Tilde the griffon and Chloe the sheep, both living far away and neither ever having been to Stonebridge before.
Chess Piece the named organisor told us he had intended to bring the group back together with him at the head, but chose not to. This was half a year ago. It was the only thing that we found to give Minus' stories any credence. No other named pony had been in contact with anyone else from that group since it disbanded. The one pony we couldn't contact is Algorithm, who had taken his life 2 months back, but his remaining family do not believe he had kept in touch with anyone else from that group, and they had not heard of Minus either.
I know it's not my place to theorise, but these are clearly not just magic duplicates or changelings. Each one of these Minuses seems to have had a different life and come from a different Equestria. The one from ours has not yet been identified, but we know he isn't one of the survivors spoken to so far.
We still haven't been able to work out what brought them all here, but the catalyst appears to have been our Minus jumping or falling off the bridge to his death. Some electrical phenomenom then occurred which caused injuries to several Minuses and propelled them away, causing further injuries, but keeping them from drowning. None of the ones that drowned showed signs of burns. The 7 that are recovering have not been told anything and we desperately await your solution to housing them once they are healed. We've done our best to keep them from seeing each other at the hospital, but the first one to wake up is already well enough to go home, and is quite the question asker.
Yours sincerely, Investigator Dual Star