Rescue teams, including divers from the Royal Thai Navy, marine police, the Marine Department and the Public Disaster Prevention and Mitigation Department joined the Ruamkatanyu Foundation  today (Friday) in the search for missing TV star Nida “Tangmo” Patcharaveerapong, who fell into the Chao Phraya River from a speed boat late Thursday night.

The search area, which had been confined to and around the Pibulsongkram Pier in Nonthaburi, has now been extended to cover 10 kilometres downstream from the Rama 7 Bridge.

The rescue teams adjusted the search area failing to locate the missing star. More than 100 people, including divers and dozens of vessels, are now involved in the massive search.

At 3-4 pm, when the tide in the Chao Phraya River ebbed, the search involved mainly surface vessels.

Today, Nonthaburi’s Muang district police is set to question Tangmo’s group of friends, who were in the same boat last night, and the skipper.

The superintendent of Muang district police, said last night that they had asked Tangmo’s friends to come to the police station for questioning this afternoon. He said police want to know exactly what happened in the boat and whether any of them had consumed alcohol or drugs.

The Tangmo hashtag has been viral on Twitter since late last night as netizens sent texts offering moral support to the rescue teams and the actress’ parents and hoping that she is found safe and well.

Her mother and brother have lodged a complaint with Nonthaburi’s Muang district police, seeking the truth behind the actress’s fall into the river.

Police believe the actress fell into the river as she went to the back of the boat, adding that police will find out whether the boat had an operating license.