Former President Obama met with former President George H.W. Bush in Houston on Tuesday prior to a speaking engagement at Rice University, Bush's spokesman said.

"The two had a very pleasant and private visit at the Bush residence, where they rekindled what was already a very warm friendship," Bush spokesman Jim McGrath wrote on Twitter.

President @GeorgeHWBush was very pleased to receive President @BarackObama this afternoon during his visit to #Houston. The two had a very pleasant and private visit at the Bush residence, where they rekindled what was already a very warm friendship. — Jim McGrath (@jgm41) November 27, 2018

Obama was scheduled to speak at a forum at the Baker Institute at Rice University on Tuesday night.

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Obama and his wife, Michelle, saw Bush in April when they attended Barbara Bush's funeral in Houston.

George H.W. Bush, 94, has dealt with health issues in the time since. He was hospitalized the day after his wife's funeral for an infection, and was released after about two weeks.

The former president was also admitted to a hospital in Maine for about a week in late May due to low blood pressure.