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The reason for a weekend trip to the hospital by Patriots defensive lineman Chandler Jones initially wasn’t know. According to Chris Curtis, producer of WEEI’s Dennis & Callahan Show, it now is.

Curtis reports, citing unnamed police sources, that Jones overdosed on pills on Saturday night. An ambulance transported Jones to Norwood Hospital.

The pills taken by Jones aren’t known. In theory, he could be subject to NFL action if the substance has been banned by the NFL. The medical records generated by the trip to the hospital undoubtedly contained information regarding what Jones ingested.

Automatic suspension would arise only if the compound is a PED. For street drugs, an initial violation would result at worst in placement in the league’s substance-abuse program, along with enhanced testing. Multiple violations typically are required before a suspension occurs.

UPDATE 8:37 p.m. ET: The report from WEEI initially claimed that the overdose happened at teammate Rob Gronkowski’s house. That tweet has been deleted, replaced by a new one that reiterates the overdose report, but that does not say where it occurred.