SAN ANTONIO -- A 54-year-old Southwest Independent School District special education teacher was arrested after he exposed himself to an undercover police officer, San Antonio police said.

After an officer spotted Lewin Bramwell acting suspiciously at Olmos Park on Tuesday afternoon, an undercover officer was dispatched to the park, said Officer Matthew Porter, a spokesman with the San Antonio Police Department.

Moments after the undercover officer initiated a conversation with Bramwell, the suspect exposed himself to the officer, Porter said.

Bramwell, who teaches at Southwest Elementary, was arrested and charged with indecent exposure. He was released after posting $800 bail, Porter said.

"I made a mistake ...wrong place... wrong time," Bramwell said to KSAT 12 News.