GREENVILLE, N.C. (WNCT) — Greenville police were continuing to investigate two shootings that happened early Sunday.

Around midnight Sunday, Greenville police responded to the 1700 block of West Conley Street in reference to a shot spotter. Officers found a 16-year-old male outside with a gunshot wound. The victim was then transferred to ECU Health Medical Center where he was listed in critical condition.

At least one home was struck by gunfire but nobody inside was injured.

A few hours later, police responded to another call on East 3rd Street. Shell casings were recovered at the scene. A short while after, a 25-year-old man arrived at ECU Health Medical Center with a gunshot wound. He was expected to make a full recovery.

Detectives have already developed strong leads and the investigation into both cases continues. The two incidents do not appear to be related.

“in both cases, we’re still making really good progress. I think we’re going to make a quick resolution.”

Police said they were alerted to both locations with a ShotSpotter.

“It uses acoustics to triangulate where noises are coming from,” Greenville Police Chief Ted Sauls said. “They come to us as fast as you’re going to get notification and then we’re able to use camera views through our telecommunicators to say ‘okay ‘OK, I’ve got eyes on the site and I can see what’s going on.'”

The technology has been in Greenville for about five years. Sauls said it has helped tremendously in response times.

“Our response decreased from roughly 10 minutes to 5 minutes so cut it in half,” Sauls said.

“It has allowed us to make more arrests of offenders and allowed us in many cases to find our victims faster and with a wonderful facility at ECU health, we can get them to a facility where they can save lives.”

Even with the technology, Sauls said they still need to hear from you.

“We never want our citizens to stop calling,” Saulsa said. “My plea has been for a long time and will continue … I need help from the public to reduce gun violence.”