The report comes just over a week since The Miami New Times reported that it obtained records detailing purchases of human growth hormone and other performance-enhancing substances by Alex Rodriguez, Melky Cabrera, Gio Gonzalez, Bartolo Colon, Nelson Cruz and Yasmani Grandal from a Miami clinic called Biogenesis, run by Anthony Bosch.
The Daily News report does not specifically tie Montero to any performance-enhancing drug purchases, only that his name was listed in the clinic's records. Montero is represented by agents Seth and Sam Levinson, who have several clients linked in earlier reports to the now-shuttered clinic.
Montero told Geoff Baker of the Seattle Times he had no idea how he ended up in the clinic's records.
"I have no clue what happened. I feel like I'm caught in the middle of something and I don't know why," Montero told the Seattle Times. "I don't even know who (Bosch) is. I've never heard of him."
A Seattle Mariners spokesman said they strongly support Major League Baseball's Joint Drug Prevention and Treatment Program, and are disappointed any time they hear of any players potentially involved with banned substances.
"We are aware of the report which appeared today in the New York Daily News and have been in contact with Major League Baseball to discuss it," Tim Hevly, Senior Director of Baseball Information for the Mariners, told KOMO News. "This matter is now in the hands of the Commissioner's Office. At this time, with no additional information, we will have no further comment until that investigation has concluded, and all other questions should be directed to Major League Baseball."
Montero was traded to the Mariners from the New York Yankees prior to the 2012 season for pitcher Michael Pineda. He batted .260 with 15 home runs and 62 RBIs and is pegged as the starting catcher for the Mariners this year.