Two unrelated shootings at Northern Arizona University and Texas Southern University Friday morning left two people dead and four wounded, according to officials.

This is apparently the third shooting at the TSU campus in the past two months, the Daily Beast reports, and comes just a week after nine students were fatally shot at an Oregon community college. Since the violence, there has been a growing national debate over gun control.

Both college shootings early Friday occurred near campus housing, and though the Associated Press reports that a "possible suspect" at TSU is currently in custody, the Houston school remains on lockdown, police say.

Northern Arizona University

One person was killed after an 18-year-old student pulled out a handgun and shot four people in a parking lot near the Delta Chi fraternity house, CNN reported. The shooting took place early Friday morning during a conflict that quickly escalated at the Flagstaff, Arizona, campus.

Texas Southern University

One person was killed and another was wounded on Friday after being shot at a campus-owned apartment complex, Houston police say. The shooting occurred just hours after news of an unrelated shooting at an Arizona college was released.

"Texas Southern said there was a separate shooting incident at an apartment complex near campus on Thursday night," Reuters reported.

In the days since a shooter killed nine students and wounded nine others at Umpqua Community College in Roseburg, Oregon, the country has once again become engaged in debates regarding gun laws. President Barack Obama arrived in Roseburg on Friday and is expected to follow up on his speech about the need for gun reform.

"[A]s I said just a few months ago, and I said a few months before that, and I said each time we see one of these shootings: our thoughts are prayers are not enough. It's not enough," Obama said. "It does not capture the heartache and grief and anger that we should feel. And it does nothing to prevent this carnage from being inflicted somewhere else in America."