The five-time Pro Bowl selection set the National Football League single-season record for touchdowns (18 - 17 receiving, one rushing) and receiving yards (1,327) by a tight end in 2011.
He caught nine Tom Brady passes for 116 yards and 2 touchdowns in Sunday's 41-33 defeat.
It has been established that there were "multiple safes and possible guns taken" from the residence, according to a recording of the police scanner call.
Police are expected to issue a news release about the incident sometime later in the day, Deadspin reports.
Like many of his teammates, Gronkowski has a home in Foxborough, Massachusetts, the suburb about 25 miles (40 km) south of Boston that is home to Gillette Stadium, where the team pratices and plays.
Police said no other information would be released until more details are learned. "You never see that gate ajar". "The burglars know what they took and we know what they took, and we are going to play that close to the vest while the investigation is going on". But their lead didn't last long, as the Eagles went on to secure their first Super Bowl win in franchise history.
That loss was particularly hard for Gronkowski, who was unable to play in the Super Bowl past year after undergoing back surgery to fix a herniated disk. "We've just got to sit back and relax for a couple of weeks and just look back at all our fond memories of a great season we had".
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