A US particle machine has seen possible hints of the Higgs boson, it has emerged, after reports this week of similar glimpses at Europe's Large Hadron Collider (LHC) laboratory.
The Higgs boson sub-atomic particle is a missing cornerstone in the accepted theory of particle physics.
Researchers have been analysing data from the Tevatron machine near Chicago.
The hints seen at the Tevatron are weaker than those reported at the LHC, but occur in the same "search region".
Physicists have cautioned that these possible hints could disappear after further analysis.
But researchers also say when the US and European results are taken together, they start to paint an "intriguing" picture.
The results are being presented and discussed at the Europhysics conference in Grenoble, France.
http://www.bbc.co.uk/news/science-environment-14266358
Note: Update Record,24 July 2011 Last updated at 14:57 GMT