Mets outfield prospect Cesar Puello and a former Mets prospect, Fernando Martinez, now with the Astros, are two of five new names that have been linked to the Biogenesis clinic in Miami, ESPN reported Tuesday.

Puello, 21, batted .260 with four homers and 21 RBIs for Class A St. Lucie last season. He is in camp with the Mets in Port St. Lucie, Fla.

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"Because of the ongoing investigation, we have no comment," the Mets said Tuesday night in a statement. "We refer all questions to Major League Baseball."

Martinez, 24, was once considered the Mets' top prospect before injuries slowed his development. Signed at the age of 16, Martinez made his major-league debut at 20 but played a total of 47 games over three seasons and batted .183. The Astros claimed Martinez off waivers in January 2012.

The other new players listed in documents from Biogenesis, according to ESPN, are Padres shortstop Everth Cabrera, Padres reliever Fautino De Los Santos and Athletics reliever Jordan Norberto.

MLB has been investigating Biogenesis, the anti-aging clinic accused of distributing PEDs.