(NBC News) — At least four U.S. Navy sailors assigned to the same facility in Virginia died by suicide in the last few weeks, including one as recently as Saturday, military officials and family members said.

It is the latest cluster of Navy suicides this year to spark concerns of a fleetwide mental health crisis.

The four sailors worked for the Mid-Atlantic Regional Maintenance Center (MARMC), which maintains military ships and is based in Norfolk, Virginia.

“I was inundated with the amount of hopelessness at that command,” said Kayla Arestivo, a licensed counselor who was brought in two weeks ago to help the sailors in the unit.

Read the full story on NBCNews.com.