Mexico's navy secretary Admiral Raymundo Morales said there had been "no serious impact", but advised people to avoid the coastline while authorities continued to monitor the situation.
By Maureen KinyanjuiDespite the achievement, their return marks the beginning of a careful transition back to life on Earth. Immediately after splashdown, the crew are expected to undergo medical checks aboard a US Navy recovery ship before being flown by helicopter to shore and later transported to Johnson Space Center in Houston for further evaluation.
By Maureen KinyanjuiAt least 57 people have now been killed in similar operations, increasing tensions with Colombia and Venezuela. While most earlier strikes were in the Caribbean, the US has recently intensified operations in the Pacific, a major corridor for drug trafficking.
By Maureen KinyanjuiLovell was also part of the Apollo 8 mission and became the first person to travel to the Moon twice, though he never actually stepped on its surface.
By Rose Achieng