John-Paul Rodrigue, a maritime shipping specialist at Texas A&M University, says conflicting reports about the status of the Strait of Hormuz are still deterring many vessels from crossing, despite Iran’s announcement that it is open, reports Al Jazeera.

“Ships have been attempting transit since the announcement … but it looks like many of them are heading back because the situation is unclear,” Rodrigue told Al Jazeera.

“There is contradictory information being issued by all parties,” he said.