Soon after the latest crash, Nigeria's president suffered another blow when his wife, Stella, died in Spain. She would have been 60 next month.
In a one-sentence statement signed by the presidential spokeswoman, Remi Oyo, described her as Obasanjo's "beloved wife." No further details were given as to what caused her death.
The Spanish Foreign Ministry said she died Sunday morning at a hospital in the southern resort city of Marbella, where she was on a private visit. It had no information on the cause of death and did not know if she had undergone surgery, as asserted by Nigerian officials in Abuja.
The body was taken to a coroner's office in nearby Malaga for an autopsy, the ministry said.
Associated Press writer Bashir Adigun in Abuja, Nigeria, contributed to this report.
The incident is the third passenger jet crash in Nigeria in less than a year.
Nigerian president promises an exhaustive probe into the cause of the crash that killed 117 people.
A team from the U.S. National Transportation Safety Board is due in Nigeria on Tuesday night to help with the investigation.
North American will fly between Lagos and New York three times a week beginning July 17.