Derby said earlier that local police had spoken to a person acting suspiciously outside their training ground on Thursday.
Police confirmed a man was found and questioned at the perimeter fence of the complex, before being sent on his way with no arrest made.
Bielsa spoke to Lampard over the phone to accept full responsibility for the incident but the former England midfielder was still unhappy with the pre-match distraction after goals from Kemar Roofe and Jack Harrison secured Leeds a welcome win.
"Without trying to find a justification, I have been using this kind of practice since the qualifications for the World Cup with Argentina".
"The fortunate thing is that it has disrupted us without really doing anything". Leeds is managed by Argentine coach Marcelo Bielsa, who is known for his meticulous planning and attention to detail.
Andrea Radrizzani met with Derby County's owner Mel Morris to formally apologise for the actions of Leeds manager Marcelo Bielsa.
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He did not explicitly acknowledge the existence of the investigation of Trump to congressional investigators. Giuliani said that nothing came out of the investigation, but admitted that he did not know much about it.
'We will make no further comment on this matter'.
The six tweets in between expounded his arguments, where he elaborated on why he thought Bielsa and Leeds United were in the wrong.
"It doesn't matter if this is legal or illegal, right or wrong".
Derby held high level talks with Leeds on Friday about the issue, but the Rams have not reported it to the EFL, Lampard confirming that Bielsa's admission would suffice.
Lampard called the incident "bad", telling Sky prior to the match that "if we are going to start talking about 'culturally I did it somewhere else and it was fine, ' then that doesn't work for me".
Leeds are top of the Championship table despite losing their past three games in all competitions, while Derby occupy the final play-off spot in sixth.
"To sum up I am the only one responsible and I must respect the country I am in. It's up to the league to see how they deal with it", Lampard said.
"When you come in with tools, pliers and boltcutters to break into private property, to crawl on your hands and knees to spy on a training session, it goes beyond what is right I believe".