Pittsburgh Penguins defenseman Kris Letang is set to miss his second straight game Saturday against the New Jersey Devils with an undisclosed injury, according to Shelly Anderson of the Pittsburgh Post-Gazette.

UPDATE: Wednesday, Feb. 12, at 6:54 p.m. ET by Tim Keeney

After missing three games, Letang will return to the lineup on Wednesday night when the Penguins take on the Ottawa Senators (via the Penguins' official Twitter account):

Letang and Niskanen return to the lineup tonight! #Pens

— Pittsburgh Penguins (@penguins) February 13, 2013

---End of update---

UPDATE: Wednesday, Feb. 12, at 11:30 a.m. ET by Timothy Rapp

Letang had several comments about the duration of his injury and why he'll be returning to action now, via the Penguins' official Twitter account:

Kris Letang: Reason I didn't play for 3 games was because I wanted to get to 100%. I feel pretty good. I'm ready to go.

— Pittsburgh Penguins (@penguins) February 13, 2013

More Letang: It's coaches decision (to play).

— Pittsburgh Penguins (@penguins) February 13, 2013

#Pens coach Bylsma: Niskanen and Letang moving close to being able and ready to play. We'll see with doctor. Lineup game-time decisions

— Pittsburgh Penguins (@penguins) February 13, 2013

---End of update---

UPDATE: Tuesday, Feb. 12, at 1:05 p.m. ET by Timothy Rapp

Letang had the following comments after practicing for the first time in a few days, via the Penguins official Twitter account:

Kris Letang: Felt good. Had a chance to battle. Talk with doctor and go from there. Talk now and tomorrow after morning skate

— Pittsburgh Penguins (@penguins) February 12, 2013

---End of update---

UPDATE: Tuesday, Feb. 12, at 11:22 a.m. ET by Timothy Rapp

Good news, Penguins' fans—Letang is once again practicing with the team, according to Shelly Anderson of the Pittsburgh Post-Gazette:

Injured defenseman Kris Letang has joined #Penguins practice. First time for that since he's been hurt.

— Shelly Anderson (@pgshelly) February 12, 2013

---End of update---

UPDATE: Sunday, Feb. 10, 1:50 p.m. ET by Donald Wood 

According to Pittsburgh Penguins’ insider Sam Kasan, the team has placed All-Star defender Kris Letang on the Injured Reserve list and will not have him available to play until Tuesday at the earliest:

Letang has been retroactively placed on IR to last Tuesday. Must remain for one week and then can be activated -SK

— Pens Inside Scoop (@PensInsideScoop) February 10, 2013

---End of update---

The star defenseman was held out of practice on Thursday and did not play that night against Washington.

The Penguins are not saying what's wrong with Letang. All they are willing to divulge is that he's day-to-day.

The 25-year-old has three goals and six assists so far this season, along with a plus-four rating. Last season, Letang scored 10 goals and added 32 assists in only 51 games. 

It is not yet clear what the extent of the injury is or whether Letang is expected to miss a significant amount of time. 

If he does, expect Dylan Reese, who was called up from the AHL's Wilkes-Barre/Scranton Penguins to replace Letang, to stay with the big club.

Letang is critical to the team's third-ranked power play. The team did, however, score three power-play goals on Thursday without him.

This will be Letang's second missed game of the year. Last season, Letang missed 31 games with a concussion.