San Juan, Mar 8 (AP) The US Coast Guard on Saturday investigated a fuel spill off the tiny Puerto Rican island of Vieques, which is popular with tourists.

A mile-long sheen and a strong diesel odour was reported by local emergency medical officials on Friday afternoon along Sun Bay Beach, which is known for its clear, turquoise waters.

Also Read | 'Free Palestine': Emergency Services Respond After Man With Palestinian Flag Climbs up Big Ben Tower in London (Watch Video).

At least one person was exposed to the unknown substance and received treatment, the Coast Guard said Friday.

Authorities urged people to stay out of the water. (AP)

Also Read | Pope Francis Health Update: 88-Year-Old Pope Rests in Hospital As Vatican and Holy Year Marches On Without Him.

(The above story is verified and authored by Press Trust of India (PTI) staff. PTI, India’s premier news agency, employs more than 400 journalists and 500 stringers to cover almost every district and small town in India.. The views appearing in the above post do not reflect the opinions of LatestLY)