The five-time champion claimed that a French television crew, apparently hoping to uncover eventual signs of doping, attempted to get access to his room after he left to race in the 102-mile trek from Saint-Flour to Figeac in central France.
``Just this morning, after we left, a TV crew from France 3 was going to the hotel, the reception, to the owner, asking for our room, trying to get in our room,'' Armstrong said.
He called such behavior ``scandalous'' and said he was scared that products could be planted to make him look guilty.
``They show up and they ask sporting questions to our face, but as soon as they leave they're digging in the rooms and looking for dirt,'' he said. ``If you left a B vitamin sitting there, that would get on TV and that would be a scandal. That's what we have to live with every day.''
``This particular guy from France 3 has been following us for months and it's scandalous,'' he said. ``The scary thing is, if they don't find anything and get frustrated after a couple of months ... well, who's to say they won't put something there and say 'look what we've found.'''
Moncoutie won his first stage victory in five Tours by breaking away from the pack with two other riders and then leaving them in his wake as he rode alone over the last few miles to the line.
He was the second French rider to win in two days. Richard Virenque won the 10th stage on Wednesday - France's Bastille Day national holiday.
``To win a Tour stage is fabulous,'' Moncoutie said. ``It was one of my dreams.''
Top 10 results, Stage 11 (Saint-Flour to Figeac, 164 km):
1. David Moncoutie (FRA/COF) 3hr 54min 58sec
(average: 41.9 kph)
2. Juan Antonio Flecha (SPA/FAS) at 2:15
3. Egoi Martinez (SPA/EUS) 2:17
4. Thor Hushovd (NOR/C.A) 5:58
5. Erik Zabel (GER/MOB) 5:58
6. Robbie McEwen (AUS/LOT) 5:58
7. Paolo Bettini (ITA/QST) 5:58
8. Danilo Hondo (GER/GRL) 5:58
9. Lance Armstrong (USA/USP) 5:58
10. Stuart O'Grady (AUS/COF) 5:58
Stage 11: Complete results
Top 10 overall (after Stage 11):
1. Thomas Voeckler (FRA/BLB) 46hr 43min 10sec
2. Stuart O'Grady (AUS/COF) at 3:00
3. Sandy Casar (FRA/FDJ) 4:13
4. Richard Virenque (FRA/QST) 6:52
5. Jakob Piil (DEN/CSC) 7:43
6. Lance Armstrong (USA/USP) 9:35
7. Erik Zabel (GER/MOB) 9:58
8. Jose Azevedo (POR/USP) 10:04
9. Jose Enrique Gutierrez (SPA/PHO) 10:09
10. Francisco Mancebo (SPA/BAL) 10:18
Stage 11: Complete overall standings
Stage 11: Category standings