A Hilo couple was charged today on numerous drug and theft crimes that occurred over a period of a few months.

Hawaii County police arrested Travis Anzai, 22, and Shanlia Baker-Sigler, 23, on suspicion of multiple auto thefts at Honolii Beach Park, a popular park for water sports activities on the Hamakua Coast.

Police started investigating the vehicle thefts a few months ago, and identified two suspects.

Police were also investigating narcotics distribution in Hilo and executed a search warrant Thursday at a Hilo home.

There police discovered heroin, ammunition and evidence of drug distribution and found and arrested Anzai and Baker-Sigler.

They also found evidence connecting the pair to the Honolii Beach auto thefts, police said.

They were later charged with multiple offenses including drug possession and distribution, theft, auto theft, and multiple counts of unauthorized possession of personal confidential information and credit card theft.

Anzai is being held on $307,000 bail and Baker-Sigler is being held on $157,000 bail pending their court appearance Monday.

Officer Thomas Chun-Ming said the investigation was a team effort involving the community and police, a police news release said.

He said information came from Craigslist, where stolen items were posted and at least one victim identified stolen property from social media posts.

Officers also canvassed the area for leads and witnesses provided information, including a video that identified one of the accomplices in the vehicle thefts.

Police warned the public to make sure to safeguard their property and vehicles.

In some cases, police found suspects used a lookout, who watched where beachgoers hid their keys on their vehicles.

Some used magnetic key holders, hid keys under the bumper, in truck bedliners and some left their vehicles unlocked and left keys in cup holders.