Santa Rosa authorities announced that at least two teens have died and two others were hospitalized following possible fentanyl overdoses over the weekend, with police making an arrest.

Santa Rosa police investigators said on Monday they're conducting multiple investigations into the overdose death of two high school students, and the poisoning and hospitalization of two others, all due to fentanyl.

Two makeshift memorials, separated by just 3 miles, stood solemnly at the entrances of Santa Rosa and Montgomery high schools Monday morning. Adorned with flowers, handwritten notes and heartfelt messages,