Update 20:35
The news is now also being reported by Brazilian media outlet Globo.
20:16
According to Brazilian reporter Ana Hissa (described as "a very good reporter" by MMAFighting.com's Luke Thomas), Jose Aldo suffered a fractured rib during sparring today.
Just 18 days away from his title fight against Conor McGregor it is certainly an injury which could put the UFC 189 headliner in jeopardy.
Aldo injured during sparring session, exams confirm fractured rib
— Ana Hissa (@AnaHissa) June 23, 2015
There was a rumour yesterday that Aldo had suffered an injury but that was untrue.
In another tweet Hissa confirmed that new injury happened this morning.
Yesterday that was a rumor that aldo was injured. Not true. The injury happened today, tuesday morning, during sparring session
— Ana Hissa (@AnaHissa) June 23, 2015